Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccad1210e121ee60…

MALICIOUS

PDF

67.0 KB Created: 2021-02-23 11:22:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: b26d433252e28c6fb88f7517e54c4955 SHA-1: 5753e2bf1137c125b80d538a41b1e05a098bbba9 SHA-256: ccad1210e121ee60a6ea4ad35ec48e9fd439f40139ed5f4bd8b2232d0046f249
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan payload. It contains numerous embedded URLs, many pointing to disposable hosting and link farms, suggesting an attempt to redirect users to malicious sites. The document body, though heavily obfuscated, appears to be a lure related to search queries, further supporting a phishing or scam objective.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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 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://bologen.ru/strik?utm_term=does+liftmaster+remote+work+with+craftsman PDF link annotation
    • https://zeruposizagaki.weebly.com/uploads/1/3/4/8/134854722/zadirefepojaxu.pdfIn PDF document text
    • http://lnstagram-copyright-supports.com/36625303182i2fi3.pdfIn PDF document text
    • https://vonenefanor.weebly.com/uploads/1/3/4/6/134638091/lugowenemuxobi.pdfIn PDF document text
    • http://rte-ita.fun/saponamirixomakelugegizo1yq8p.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383460/normal_6001f46203a19.pdfIn PDF document text
    • https://cdn.sqhk.co/wixexozesila/jxkBiaB/toy_airplane_flight_simulator_online.pdfIn PDF document text
    • https://cdn.sqhk.co/zasemewiti/1ifhcoy/pac-_man_geo_release_date.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377381/normal_60080352a24b8.pdfIn PDF document text
    • http://yogait.space/21854781004t90vi.pdfIn PDF document text
    • https://xukifunizagopo.weebly.com/uploads/1/3/4/0/134013279/soremolarabaz.pdfIn PDF document text
    • https://sadavofabuloxus.weebly.com/uploads/1/3/5/3/135316226/siwutup-tinirudapaku.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365660/normal_5fceff66c420d.pdfIn PDF document text
    • http://olymp-trade.top/425303688784cf47.pdfIn PDF document text
    • https://duvutotan.weebly.com/uploads/1/3/0/7/130775700/a04f4bb.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/daselex/edge_of_the_empire_character_creation_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/past_form_of_write_off.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF62 5276 bytes
SHA-256: 3718d2f091f4f98fd46edbd885e9df103210f58a22b024f9a5c6df2801f20661
font_01_sfnt_off0000e140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE140 10992 bytes
SHA-256: 43f75a2ca2fdef0b9e7740ffbe86c653f854a0519527c7b67452c1a78714561c

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