Malicious PDF — malware analysis report

Static analysis result for SHA-256 9871086220cf071a…

MALICIOUS

PDF

79.2 KB Created: 2021-03-15 07:25:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 056a3efbd07b6a2cc30f4ac311b0d2c5 SHA-1: 46826b44294f7eee68f3114612225446a91dec75 SHA-256: 9871086220cf071abfcb6d48c240aa525e391f7ca625489c3148ef18f4bc4a67
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to disposable hosting or potentially malicious domains, suggesting an attempt to redirect users to harmful content. The document body, though heavily obfuscated, appears to be a lure related to search terms, further supporting a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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://fokemale.ru/wix?keyword=saint+john+church+townsend+ma PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4450440/normal_5feece748228b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475861/normal_604d1675644f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451736/normal_5fd655726f763.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403947/normal_5fc69e3266a54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391015/normal_603e8ccd2cbf4.pdfIn PDF document text
    • http://excellent-spb.ru/64957983919kqhwu.pdfIn PDF document text
    • http://com-signto5.xyz/79590662481rkn0s.pdfIn PDF document text
    • http://crystal-light33.ru/how_to_fix_gta_5_launcher_error3awsw.pdfIn PDF document text
    • http://bumufirila.mygamesonline.org/19364824646.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480423/normal_604eb1874decd.pdfIn PDF document text
    • http://janipuwibir.mywebcommunity.org/95416628664.pdfIn PDF document text
    • http://mx50off.pro/why_do_companies_capitalize_interest4dpp3.pdfIn PDF document text
    • http://rowefuzoj.mygamesonline.org/46677381166.pdfIn PDF document text
    • http://tugrull.com/womodobamaayhx2.pdfIn PDF document text
    • http://sexedate69.site/gakifavedilefezu8qf2m.pdfIn PDF document text
    • http://2220202.ru/cliff_swallows_and_barn_swallowsai81y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425726/normal_60480c639a18e.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
    • http://widifusi.myartsonline.com/86289917059.pdfIn PDF document text
    • http://wejufutaz.onlinewebshop.net/23279396020.pdfIn PDF document text
    • http://saxodanokijaj.atwebpages.com/how_much_does_it_cost_to_replace_a_tankless_water_heater.pdfIn PDF document text
    • http://torejejowomu.myartsonline.com/49115886713.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA94 5300 bytes
SHA-256: 780af6f25d2aeb7f78e5638ce8fc2543f341b5f66354a3ae44fc86d22592fee3
font_01_sfnt_off0000fc6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC6A 10996 bytes
SHA-256: 184cb96e43e4f1a5feb7175838f5d3345c8881fd81ec2051c2a6a8a2ba9c0e1c
font_02_sfnt_off0001218e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1218E 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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