Malicious PDF — malware analysis report

Static analysis result for SHA-256 03b519772fee24cc…

MALICIOUS

PDF

121.2 KB Created: 2021-06-09 22:02:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 68d8340a92b063865b807d4b49ab1ff4 SHA-1: 111c87f86e971d76dae16c2f6600886af81a991a SHA-256: 03b519772fee24cc69fa686c880a7e7af763afc70016769aeab448feb0c9c6b9
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://oniceh.ru/pbw?utm_term=style+text+generator+for+pubg PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373768/normal_6067a55166392.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486982/normal_604376577ded0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389101/normal_5fecc5559b06b.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4393635/normal_60b66e7f494f9.pdfIn PDF document text
    • https://zegazofegu.weebly.com/uploads/1/3/5/2/135296009/720380.pdfIn PDF document text
    • https://kidodekorabatet.weebly.com/uploads/1/3/4/3/134320193/449b7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452834/normal_5fcd1ff1a6988.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384325/normal_601dca35deea2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367273/normal_5fedcc21d266c.pdfIn PDF document text
    • https://jenodaxadow.weebly.com/uploads/1/3/4/0/134012655/2650420.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://nebapelamive.pbworks.com/w/file/fetch/144538500/powapemaduni.pdfIn PDF document text
    • http://xodelow.pbworks.com/f/beyond_bullet_points_story_template.pdfIn PDF document text
    • http://guleribiko.pbworks.com/f/easycap_video_capture_driver_windows_10.pdfIn PDF document text
    • http://xetibubib.pbworks.com/f/43030586476.pdfIn PDF document text
    • http://xesimisejek.pbworks.com/w/file/fetch/144745773/1201333108.pdfIn PDF document text
    • http://lodenapokot.pbworks.com/w/file/fetch/144837495/mumujuruxedi.pdfIn PDF document text
    • http://zajozote.pbworks.com/w/file/fetch/144444297/is_raft_still_getting_updates.pdfIn PDF document text
    • http://gitixofipoxu.pbworks.com/f/fisuwim.pdfIn PDF document text
    • http://sipibujewadu.pbworks.com/w/file/fetch/144498429/refugee_alan_gratz_audiobook_free.pdfIn PDF document text
    • http://kasaxuwux.pbworks.com/f/93291629884.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://sinhala.sourceforge.net/In PDF document text
    • http://sinhala.cvs.sourceforge.net/viewvc/*checkout*/sinhala/sinhala/fonts/CREDITSIn PDF document text
    • http://www.gnu.org/licenses/gpl-2.0.htmlIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 9

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00011d4e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x11D4E 7012 bytes
SHA-256: edec2eaeb33f9d6565af95692ebbd6a7e9400b378ed5c51e24ec7b1b606f59f3
font_00_sfnt_off0000f085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF085 15688 bytes
SHA-256: ac5c9d4f66c031bd15c2d99f8129bc15e926649521210634c20f44ea2d62f9bc
font_02_sfnt_off000135a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135A1 5304 bytes
SHA-256: 2a27814a5353be230beddc9b916c34df8427ba4b03a58d608cfb9a501c565783
font_03_sfnt_off0001478d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1478D 2864 bytes
SHA-256: 0f5c0efe4ccad7a3042cb2f954a21695c88ac0a69202bea05a82717ed60afa37
font_04_sfnt_off00015253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15253 3400 bytes
SHA-256: d8ebaa86d99037918eb5d1faa9ff0a9ea5a06239f5d9e4923fcf7fa9d7dbf717
font_05_sfnt_off00015ff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15FF4 5820 bytes
SHA-256: d580eb3d89b8d5a27e398268fc97eabb57caa2094102a7c02b77d64f4f16913b
font_06_sfnt_off00016e99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16E99 17788 bytes
SHA-256: f62f3d7e1394ba2a7ca2aacf3dd65072a4aa4cd27b676e1dd15352a278ca3a2e
font_07_sfnt_off0001a7e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A7E3 17760 bytes
SHA-256: 927c1354f8df1555225a3ffb647f4ac7e30697d97e0f16795319fbc570d3aa33
font_08_sfnt_off0001c31e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C31E 6884 bytes
SHA-256: e340ecbce31fbc5a8ee0611bd75b68cf75d2baca3aed591029714ddf5bad17e1

Open this report in the interactive analyzer, or submit your own file for analysis.