Malicious PDF — malware analysis report

Static analysis result for SHA-256 2878092edde9d8d8…

MALICIOUS

PDF

73.0 KB Created: 2020-12-25 06:41:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: caadee558768c3d0b2c84afb6893298c SHA-1: 765298f13db9c7f5b2b5cc2fdc3ee095ea6e2aa6 SHA-256: 2878092edde9d8d8fdcffedd9d6211a74e37abb1d9ed049e7a9e5a0655b9392b
214 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous external links, including one pointing to a known malicious redirector. The presence of a link related to 'china iptv apk free' suggests a potential lure for users seeking specific content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffmen.ru/123?utm_term=china+iptv+apk+free In PDF document text
    • https://zumutunamoja.weebly.com/uploads/1/3/4/5/134588160/famitikam-lorawunobop-rubagebawegoxop-zeratotirur.pdfIn PDF document text
    • https://divuvefa.weebly.com/uploads/1/3/4/7/134759037/xegadijazosibut.pdfIn PDF document text
    • https://cdn.sqhk.co/pujapipiwat/ghkjfge/tiktok_latest_news_in_usa.pdfIn PDF document text
    • https://rapugudunoxe.weebly.com/uploads/1/3/4/0/134012743/terol.pdfIn PDF document text
    • https://kupanonul.weebly.com/uploads/1/3/4/6/134682697/duvijodetan.pdfIn PDF document text
    • https://jewezuwexokuj.weebly.com/uploads/1/3/4/7/134717424/3998808.pdfIn PDF document text
    • https://cdn.sqhk.co/lelogusobade/kjhSG0f/thoroughly_in_spanish.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/matogapibelifiv/indigenous_knowledge_systems_in_natural_resource_management.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/airplay_para_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/english_renaissance_artist.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9b620d2-021d-4075-b593-49c55993d13a/denosen.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/vsco_full_pack_apk_latest_version.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/christine_pfeffer_boca_raton.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE046 4808 bytes
SHA-256: 5ecb02af595f6ef90a1fa6229dbe3829491eb109dd45b8809be3feee19a76b6a
font_01_sfnt_off0000f0a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A5 11004 bytes
SHA-256: a2d076f545db556fb8b0986184491cf229e2f67455f92fe5153a6da4f7e7e3c4

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