Malicious PDF — malware analysis report

Static analysis result for SHA-256 57202fd93605a688…

MALICIOUS

PDF

79.9 KB Created: 2021-02-18 08:47:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: e3822063f7d4298499f69fc7350cc206 SHA-1: bf81f22c6b96e3811da1fae3b69db0cf7695e33d SHA-256: 57202fd93605a68842b68410035eea0c718507a79756a58536fd399b290727ed
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting it's part of a link farm designed to direct users to potentially malicious sites. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and a date, along with what appears to be a lure related to 'forge cleric 5e'. The presence of numerous external URIs and the link farm heuristic strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://maypoin.ru/123?utm_term=how+to+play+forge+cleric+5e PDF link annotation
    • https://majivuwuwu.weebly.com/uploads/1/3/2/6/132683475/2449085.pdfIn PDF document text
    • https://jinobodusere.weebly.com/uploads/1/3/4/7/134722577/465c549f912ad2.pdfIn PDF document text
    • http://netewe8.xyz/autocad_guide_book_free_downloadfwx0s.pdfIn PDF document text
    • https://cdn.sqhk.co/muresogus/iahi4jc/song_hopeless_place.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368971/normal_602da7deb2664.pdfIn PDF document text
    • https://gavuzolarot.weebly.com/uploads/1/3/4/4/134458525/00410e.pdfIn PDF document text
    • http://capridigi.com/osrs_adamant_dragon_melee_guide2dzix.pdfIn PDF document text
    • https://karifizamazo.weebly.com/uploads/1/3/1/3/131383674/4117965.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416661/normal_5feaf637081ca.pdfIn PDF document text
    • https://sunakolezapomuj.weebly.com/uploads/1/3/4/6/134698053/8635241.pdfIn PDF document text
    • https://cdn.sqhk.co/boxoveru/ibCidjd/gojorovuxixefenosovonusig.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495392/normal_5ff78cb516d86.pdfIn PDF document text
    • https://cdn.sqhk.co/mibazudifij/jghfXgi/offline_games_like_free_fire_under_50mb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mewuxugeje.epizy.com/80030711306.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/joint_photo_frame_app.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_off0000fb80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB80 5284 bytes
SHA-256: 159b5abadfc94ba4b7ecdcf3a05e6655b6f10fc65c2c7d34a9444923dd8920e8
font_01_sfnt_off00010dae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DAE 10784 bytes
SHA-256: 07fbe25ebffb96a221e3c1a14a7f22da472a181fdf87d6b2d82ffeda0a583017

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