Malicious PDF — malware analysis report

Static analysis result for SHA-256 06a806ef72466d8f…

MALICIOUS

PDF

74.6 KB Created: 2021-03-14 09:27:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d248a84aa9e89b67ac3b8495e8a55bf SHA-1: 855426dc0a072fec918359690ccff3145179deb2 SHA-256: 06a806ef72466d8f5ffcc3ae6c1b0bbc4e10ae6f42782db07107816e64f00b81
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for phishing or SEO spam. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of links, suggesting an attempt to drive traffic to various websites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or distributing further malware via the linked sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://soxebez.ru/wix?keyword=miata+body+kit+cobra
    • https://kudilasiwutoxe.weebly.com/uploads/1/3/5/3/135314551/9830113.pdf
    • https://cdn-cms.f-static.net/uploads/4465270/normal_5fd13dac14d5f.pdf
    • https://cdn-cms.f-static.net/uploads/4458122/normal_60320edd315de.pdf
    • http://joguxujeganu.iblogger.org/ableton_live_9_lite_project_files.pdf
    • https://vejarava.weebly.com/uploads/1/3/1/0/131070596/9892943.pdf
    • https://static.s123-cdn-static.com/uploads/4418993/normal_5ffcd448ab8be.pdf
    • https://dugegedop.weebly.com/uploads/1/3/4/3/134338267/sikedalefonikitozeja.pdf
    • https://static.s123-cdn-static.com/uploads/4495385/normal_5ffebc83adfa7.pdf
    • https://static.s123-cdn-static.com/uploads/4372735/normal_5ffe7d48bcbb1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zifozuwa.rf.gd/lewufosofusonogunimimaget.pdf
    • https://uploads.strikinglycdn.com/files/fa834d10-efae-4d7f-a8ed-2dae5a2ee0d0/86890217934.pdf
    • https://uploads.strikinglycdn.com/files/641c0adf-4e44-4c60-99d5-779f85cf439b/wizixefofuv.pdf
    • https://uploads.strikinglycdn.com/files/b034460f-5c06-467a-8ee9-0d4a1d65e12f/62057867472.pdf
    • https://uploads.strikinglycdn.com/files/a55065f2-53d3-4f8e-8661-1649c171be11/25350056292.pdf
    • https://uploads.strikinglycdn.com/files/03b1d202-24c5-4f86-8335-fb4c789db15c/can_a_new_species_be_created.pdf
    • https://uploads.strikinglycdn.com/files/6ba7354d-3ff4-4cb3-acc7-a116259cfd27/sword_art_online_alicization_war_of_underworld_episode_18_release.pdf
    • https://uploads.strikinglycdn.com/files/ad5a2334-6bea-4ebf-b182-b43cd8b0980b/cybex_arc_trainer_troubleshooting.pdf
    • http://digufelusa.rf.gd/dresden_files_tv_show_imdb.pdf
    • https://uploads.strikinglycdn.com/files/2bcb09eb-ac50-4c31-ac28-a0547189448d/contax_t2_vs_t3_photos.pdf
    • https://uploads.strikinglycdn.com/files/7e158478-31d8-4a9b-a216-26173ec2bbaf/to_all_the_boys_i_loved_before_2_book.pdf
    • https://uploads.strikinglycdn.com/files/6ddc2a14-cc2e-4eef-b9ba-e344cf7c3843/how_to_use_a_rowenta_iron.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e77b.bin
30fabd52cba2f2b3e272dc392b66d7ef15412263fbd059b4e7a1920352a61abe
pdf-font-stream PDF embedded font (sfnt) at offset 0xE77B 5032 bytes
font_01_sfnt_off0000f8be.bin
6ae83af7d6b9f63030e5c5539b43d816cd4a8e911e519498b4b0780ba9e59d73
pdf-font-stream PDF embedded font (sfnt) at offset 0xF8BE 10444 bytes