Malicious PDF — malware analysis report

Static analysis result for SHA-256 064b733db7eeea22…

MALICIOUS

PDF

87.3 KB Created: 2021-03-23 08:09:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: c484a7d32104b4fbfa195ad3bdd1827a SHA-1: bb374f12e60faecdaf3802c72be8fb0f8b92c5a7 SHA-256: 064b733db7eeea223924642cb85d5fc22c2d6d1c8a9019edcf827ebcd463fffe
254 Risk Score

Malware Insights

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

This PDF document exhibits multiple indicators of malicious intent, including a high ML classifier score and ClamAV detection as a phishing trojan. It functions as a link farm, directing users to various external PDFs, one of which is hosted on disposable infrastructure. The document also contains a lure for a download button and explicitly requests sensitive recovery information, strongly suggesting a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://vilenefex.ru/wix?keyword=how+to+install+showbox+apk+on+firestick PDF link annotation
    • https://tajuzoliv.weebly.com/uploads/1/3/4/3/134359899/powejudowonu-jukubedasif.pdfIn PDF document text
    • https://cdn.sqhk.co/lojiwoxaz/jS3s8jh/wrench_or_twist_crossword_puzzle_clue.pdfIn PDF document text
    • https://donedujawag.weebly.com/uploads/1/3/4/3/134315137/juduzim-wanegugujeket-nugikanozobe.pdfIn PDF document text
    • https://cdn.sqhk.co/mevexobuzur/fa1giie/coder_mip_battery.pdfIn PDF document text
    • http://hookup750.website/poems_with_suffixes_ly_and_ful0fp5w.pdfIn PDF document text
    • http://babbieshop.ru/pogatik5y0xy.pdfIn PDF document text
    • http://afracheat2.xyz/30427643092rdb26.pdfIn PDF document text
    • http://epipog.com/416869198637a4q.pdfIn PDF document text
    • https://mujekakuvegaxum.weebly.com/uploads/1/3/2/3/132303245/nidaditekogedizevi.pdfIn PDF document text
    • http://reestr.site/figure_of_speech_worksheets_for_graduy8nr.pdfIn PDF document text
    • http://laitlabs.pro/winkler_titration_methodp1923.pdfIn PDF document text
    • https://fuxiwajusefu.weebly.com/uploads/1/3/4/6/134617271/f9590494b3.pdfIn PDF document text
    • https://cdn.sqhk.co/wafizogep/didgigf/begidavusurav.pdfIn PDF document text
    • http://ita-talia.fun/pebujeximaxogbdbxx.pdfIn PDF document text
    • http://frankiearvelo.com/26145291108sdv94.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/ee1990ca-9edf-4256-aa0e-7e4174e05a80/87412038338.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35b72764-126b-4865-9ee7-3104d94a335b/what_is_the_cost_of_a_waterpik.pdfIn PDF document text
    • https://858e1da1-ad31-4e5b-aec0-89c59c6c71f6.filesusr.com/ugd/6240f8_d455cc644a7b4bf193cdc430d3922758.pdf?index=trueIn PDF document text
    • https://d7179dab-c972-4501-9f4a-16044ca71e84.filesusr.com/ugd/434f74_09001df8153a49b98d38336e2fc2139d.pdf?index=trueIn PDF document text
    • https://28932ed2-21d9-4123-99cb-fcff0aac4472.filesusr.com/ugd/cc089a_7bda3c85d5bd4710b4cae5273d92db3b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e8e7c37-035b-4e29-88b9-5c285ec88cfe/75588700593.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a9a1983-14ff-4e73-b2b3-867199c97448/xorivarebimimomelusaji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c153be8d-0922-4881-a7a7-4fe8c1021edf/magic_bullet_cup_size_in_oz.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
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f29f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF29F 5216 bytes
SHA-256: 848d9850c914350709747f167d7bc640fec8de9a94925c3a19b2cd06a14562fe
font_01_sfnt_off00010455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10455 11672 bytes
SHA-256: b0ceb64cee1ec435c05f9022a01f1bf56ed979c00fe83e87ac9bad84a7966e44
font_02_sfnt_off00012be9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BE9 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501
font_03_sfnt_off00014117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14117 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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