Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc2869ab9dedb9ac…

MALICIOUS

PDF

1.85 MB Created: 2021-04-07 14:36:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a5f60571386a7c149945bc69b027afb2 SHA-1: 5ed2103c0157cc8218b2afe32afa8960fb0d299a SHA-256: fc2869ab9dedb9acafcc30890d9bb9378203c2ae55d45aceb9c26314f4f0365d
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. ClamAV detection further supports its malicious nature. The embedded URL is disguised as a search result for an academic solution manual, a common lure for phishing attacks.

Machine Learning

  • Nyx PDF Classifier clean score 0.0044

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://zajinet.ru/wix?keyword=essentials+of+stochastic+processes+solution+manual PDF link annotation
    • https://zibekasosux.weebly.com/uploads/1/3/4/0/134040395/lixemufik_ruzetovutabebor_fozotafomulezem.pdfIn PDF document text
    • http://lerob.info/secondhand_lions_full_movie_free85pff.pdfIn PDF document text
    • https://cdn.sqhk.co/datagemop/jd0gggj/dragon_quest_11_supreme_sword_of_light_3.pdfIn PDF document text
    • https://boduburul.weebly.com/uploads/1/3/4/6/134654649/nubija.pdfIn PDF document text
    • https://cdn.sqhk.co/bosamame/Zlehbii/leo_s_rc_simulator_pc_free_download.pdfIn PDF document text
    • https://suxamoka.weebly.com/uploads/1/3/4/8/134876373/zafizixur-wabozipemunif-noretoz-supumuji.pdfIn PDF document text
    • http://reliables.ru/casio_watch_wr100m_manualseir5.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/glkiijh/37947139217.pdfIn PDF document text
    • https://cdn.sqhk.co/wosepimi/hbibSig/75182361905.pdfIn PDF document text
    • https://cdn.sqhk.co/zifiguwosu/GagdAhe/meludurewowavorivipo.pdfIn PDF document text
    • https://nusuxoxoli.weebly.com/uploads/1/3/2/7/132710665/3756905.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.orgThisIn PDF document text
    • http://www.thdl.org/http://www.thdl.org/TibetanIn PDF document text
    • http://www.fontrix.comhttp://www.nhncorp.comIn PDF document text
    • https://f538c46d-6aff-4997-95da-320e40b30403.filesusr.com/ugd/262ba4_0416a0cfe4c54b789336907e0d09893a.pdf?index=trueIn PDF document text
    • https://35548484-ce42-4b18-9d9d-834326683263.filesusr.com/ugd/a221b6_268caba7069f46d0aa6d7e11adc10f7d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fidobakipivogit/3094941989.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/zinebofiwivugupud.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/4442776036.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/factual_report_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5637978-faf9-4e4a-a075-2488e25e6046/why_is_the_asian_tiger_mosquito_a_problem.pdfIn PDF document text
    • https://0face946-3507-4f1d-9804-30df5ac990e4.filesusr.com/ugd/8dfcc1_bc02e2c7dc444d72bac921a2934bee1a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd02e440-5c85-4693-830a-c3cf0a5c4b6a/garmin_vivofit_4_activity_tracker_manual.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://scripts.sil.org/In PDF document text
    • http://scripts.sil.org/OFLAbyssinicaIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlTibetanIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 13

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_014_off001af2d3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1AF2D3 11084 bytes
SHA-256: 9707d78600a1def7e152bb12a34dc2c5471be83ac68e6f4273d1e4e01a929d8a
stream_015_off001b106b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1B106B 82808 bytes
SHA-256: 2cb7490435c7dcd543dcc1511373cb776011ea051ff8b8060c386222cf41d669
font_02_sfnt_off001c0657.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C0657 1804 bytes
SHA-256: 7b030c40ef4baf21c806f09aac8f80c0e9568d096abeb5e64a32ad65bb1e870f
font_03_sfnt_off001c0f19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C0F19 5212 bytes
SHA-256: 0ea8c3e9efd4ad874d58542c4503916de08433be1679654c79f9e70c42d7a24b
font_04_sfnt_off001c2079.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C2079 6860 bytes
SHA-256: 70e0ea3107855434870265d30bfc0b0ebb8e74a93ee77cfb8b15862f89ddaae0
font_05_sfnt_off001c31d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C31D4 22180 bytes
SHA-256: 478b6f311ae727e9a5aaa0ed3017d3dda89bdec2c95ea64214b87a19c8e93018
font_06_sfnt_off001c55af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C55AF 9276 bytes
SHA-256: 3df75f736267ee153835198777f905c2fb08a78eaec2411f6b1e4db8743f7761
font_07_sfnt_off001c6882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C6882 2064 bytes
SHA-256: 04528f2e56ccfb99e96e805ed34e7aeb51c38e937d01b5fe013596ed7d1f40f6
font_08_sfnt_off001c716e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C716E 1708 bytes
SHA-256: 5b964055b66b1af9850919244a81f82804f416fe292ba90d36acc18df5149435
font_09_sfnt_off001c79f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C79F8 51176 bytes
SHA-256: 188856615f8f136d3c8693b062a1fb07920c5fde9c95cf37e07c555239d78114
font_10_sfnt_off001cfe06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CFE06 29600 bytes
SHA-256: b5b898bbb02fde62e3acd0e6b00fa6b27a6a455fad4e6d8f9f6be26b06a5b572
font_11_sfnt_off001d3b79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D3B79 6512 bytes
SHA-256: b08383fe95e40dde8fc33410d9bd316600d0f164fa684c5ea1d4e1974fc68b11
font_12_sfnt_off001d4fcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D4FCD 9264 bytes
SHA-256: 11669fc1875b28317c0504d8a86dc6bb701ac7aeb3c6464de5d65c7b66cd0066

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