Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fe5a6ca5a2ae1d8…

MALICIOUS

PDF

80.4 KB Created: 2021-03-15 23:43:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 791c358b47d3b2afad9bab62ecc6439e SHA-1: 2f24d25535b8a32e057a1c93dba485bf77b220e8 SHA-256: 5fe5a6ca5a2ae1d8092127f3542559c0f1305b1c63a48bb95549f9a5e30f80a6
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9993

Heuristics 5

  • 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.
  • 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://xezojetit.ru/123?utm_term=online+carrom+game+apk PDF link annotation
    • https://ginuwedisifixel.weebly.com/uploads/1/3/4/7/134744372/rurolapapiwiden.pdfIn PDF document text
    • https://tufanemoxidubux.weebly.com/uploads/1/3/4/3/134315727/8414910.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378620/normal_600d8a7701aaf.pdfIn PDF document text
    • https://jabasamivesapev.weebly.com/uploads/1/3/4/0/134041177/mupedivi_zepodoraneniwa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367299/normal_5ff66bcfaa4b1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485714/normal_5fe259c140ad6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446651/normal_5fce74b67e735.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366043/normal_6030dc50b4ad4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379964/normal_601aa8e50f361.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470220/normal_5fd9948f7b9d1.pdfIn PDF document text
    • https://radofagomomixa.weebly.com/uploads/1/3/4/1/134132329/dezef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502511/normal_5fd23b1645d82.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/math_powerpoint_theme_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/vidmate_video_app_install_new_version.pdfIn PDF document text
    • https://80b1f93a-fe74-4439-a81d-34814fa7a505.filesusr.com/ugd/e56fe2_a7273ed156d5425cbec94a2974b0b101.pdf?index=trueIn PDF document text
    • https://6632aaff-1fe9-4f1d-acb3-7d444e457837.filesusr.com/ugd/ce4b7c_c695097dd6364bd8b5a0f00a23151fb7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dosipive/fumoxomejunadaz.pdfIn PDF document text
    • https://s3.amazonaws.com/tomaxade/ivoclar_shade_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/dinner_invitation_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/xoxotakivobofefuw.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/vidmate_app_for_windows_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/bt_phishing_email_report.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/52277927489.pdfIn PDF document text
    • https://cbb9655c-b60d-4095-8c1c-bb5f9a2903c5.filesusr.com/ugd/4dd980_2e974ea737bb45b29c751c5673fc8107.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gebukil/lasifujub.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_off0000fe8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE8E 5168 bytes
SHA-256: b79f6e32ce678c234e57004d3b3b4d826aa2f07e38ff4fccd756590d76e56b36
font_01_sfnt_off0001100a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1100A 10644 bytes
SHA-256: 6ce828439d78df37f7236e816d9db47e8b00e913f5088dbdba626d158f41b0ab

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