Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc47c3cd74bd498f…

MALICIOUS

PDF

70.6 KB Created: 2021-02-25 03:52:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e4c1de5d839785c2fd1b08b196f5e1e8 SHA-1: a5d1a687aba92a18dff18a404ce5d9b73d0ee10b SHA-256: dc47c3cd74bd498f58196f9186a189cbdc6dcb480a36671ba97a97bc02c0fd00
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://leonvi.ru/wix?keyword=vpn+pro+apkpure PDF link annotation
    • https://lodofimedama.weebly.com/uploads/1/3/4/3/134327961/wiborawigilusofo.pdfIn PDF document text
    • https://bomejafir.weebly.com/uploads/1/3/4/7/134725936/numuj.pdfIn PDF document text
    • http://tegekagag.22web.org/many_headed_monster_crossword_answer.pdfIn PDF document text
    • https://cdn.sqhk.co/jukelifawap/gfpgfLE/4476621709.pdfIn PDF document text
    • https://gazewowotom.weebly.com/uploads/1/3/4/6/134616189/480982.pdfIn PDF document text
    • https://cdn.sqhk.co/jubawiwa/DpjcNtv/97668104072.pdfIn PDF document text
    • http://gifipagi.22web.org/dimanoweroxadojoroveruxe.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/ibvxGgh/mr_bullet_game_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/MheHUpx/nasal_congestion_medicine_for_3_year_old.pdfIn PDF document text
    • https://gojulujowavid.weebly.com/uploads/1/3/4/8/134886085/tumoxupa-pefojafosu.pdfIn PDF document text
    • https://cdn.sqhk.co/sileluzorupo/kEDhfrl/98050148120.pdfIn PDF document text
    • https://cdn.sqhk.co/zinazejoras/HheXkPE/6506893794.pdfIn PDF document text
    • https://babipuwoze.weebly.com/uploads/1/3/4/8/134865032/4983974.pdfIn PDF document text
    • https://cdn.sqhk.co/wekaradukuve/JEhehjI/rinolurovuxuruboporakoru.pdfIn PDF document text
    • https://cdn.sqhk.co/nolovojawek/jfbYcQh/wipuza.pdfIn PDF document text
    • https://cdn.sqhk.co/xekejegixawo/957SnHK/infection_preventionist_certified.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://kevazot.epizy.com/mujizuvugisonevisujowilu.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/57432479339.pdfIn PDF document text
    • http://lutuxulumoxi.rf.gd/25797352547.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_off0000ccd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD6 4384 bytes
SHA-256: 4f3029d4f256925140746b1b49a6ceeb7f99bd84da66b6cf8e2f9d94b98ced34
font_01_sfnt_off0000dbb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBB6 10288 bytes
SHA-256: 0264d02aa31bfa346426b9ce2b6b57509bcb9aaf9b21b8e1677c845e9a80a3df
font_02_sfnt_off0000ff01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF01 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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