Malicious PDF — malware analysis report

Static analysis result for SHA-256 be74eb61f8c6d664…

MALICIOUS

PDF

73.1 KB Created: 2021-03-06 21:45:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6c102b9b1866c85096084b748ed68de6 SHA-1: 1ab78ffd8ab66cfd9a6fa21f22bb3a2be4b3e965 SHA-256: be74eb61f8c6d6649117df03643992aacb3dad8d2d379b6cd512c4cc9416d8a1
156 Risk Score

Malware Insights

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

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 0.9998

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 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.
  • 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://ponafet.ru/wix?keyword=frog+dissection+lab+guide PDF link annotation
    • https://cdn.sqhk.co/birofinud/9Bhfjgx/the_rock_video_call_dwayne_johnson_wwe_entrance.pdfIn PDF document text
    • https://xefolulewonud.weebly.com/uploads/1/3/1/4/131406676/b50e85318.pdfIn PDF document text
    • https://cdn.sqhk.co/wugunifikezu/ggj4kjf/vanukajalajisok.pdfIn PDF document text
    • https://cdn.sqhk.co/kunimoxifagi/igfhbN0/xozokijepuwunelu.pdfIn PDF document text
    • http://losqutoq.online/robetisugenuzomoruleripolhbqgn.pdfIn PDF document text
    • http://bet-info.ru/final_fantasy_xv_a_new_empire_resource_guideb411g.pdfIn PDF document text
    • http://sokolov.fun/7024215035333adj.pdfIn PDF document text
    • https://toxosujaduwo.weebly.com/uploads/1/3/0/8/130874389/7196299.pdfIn PDF document text
    • https://lokapane.weebly.com/uploads/1/3/4/4/134464640/f1617.pdfIn PDF document text
    • http://cabinetshq.xyz/ipad_guided_access_forgotten_passwordcf30h.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://920f4c01-5fd6-4c40-8b27-b99972fecb60.filesusr.com/ugd/d63aaf_1fb2da4f677049d482177a02d601f655.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/gesugogofuligujap.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/xijisobuwibuko.pdfIn PDF document text
    • https://0ecef3a8-5193-4df1-8dcb-1b7dd0f2be2a.filesusr.com/ugd/e6092c_1d28936550454c97a417dfa820bea8d1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/lisiberasokelivefubax.pdfIn PDF document text
    • https://ac3db616-04cb-40f1-8357-c67041f5e20c.filesusr.com/ugd/eda9ba_a051e979037641c3a46c45e9bf3f9fdf.pdf?index=trueIn PDF document text
    • https://72858ab8-d36f-4bc2-b208-e5ec56e76d01.filesusr.com/ugd/3a4e0e_4ad82a2c38634fe8acf8490681e9394c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rebomedug/braselton_ga_police_reports.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE488 5204 bytes
SHA-256: 825a3640838f641724f5ea4cf9ccd0b23fb8871a41a96042a0e6eaa68e827015
font_01_sfnt_off0000f64b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF64B 9792 bytes
SHA-256: c5a8c088a57d1c1568a7150462ddc5e6e09acc9af2f2140b674e5ee0df6e4acf

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