Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e82e29a4c1b86cd…

MALICIOUS

PDF

73.8 KB Created: 2021-03-19 02:53:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 279096ae76e6b7b380e14fd541a67248 SHA-1: bb43d8768457d8844193907771fee3131b5d5e42 SHA-256: 9e82e29a4c1b86cdb4850d6c281a1dc6af27b5cec10d5dcccd547386140aa312
126 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it is a link farm on disposable hosting, with a high ML score and ClamAV detection for phishing and trojan activity. The embedded URL points to a domain that appears to be a lure for downloading software, suggesting a phishing or social engineering attack. Although no scripts were explicitly extracted, the PDF structure and URL suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://fokemale.ru/wix?keyword=free+download+tubemate+apk+2020 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4423428/normal_5ff2e56028c48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445889/normal_60101fb78192c.pdfIn PDF document text
    • https://cdn.sqhk.co/winogolelog/hh9iajj/lamekidozuwutova.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424043/normal_604025741d15d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469355/normal_600cf1d518219.pdfIn PDF document text
    • http://sulogajifuv.iblogger.org/gezurugowebupimifej.pdfIn PDF document text
    • https://cdn.sqhk.co/jututumogu/ZyNHjhB/98318919473.pdfIn PDF document text
    • http://nobirejajatit.iblogger.org/animal_planet_documentary.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://taluzeze.rf.gd/75633445113.pdfIn PDF document text
    • https://9e269ae7-c3cf-4b9f-bde2-1d9be064b7bf.filesusr.com/ugd/139869_f5f052bc99ab4702b881339482b42359.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/18457371356.pdfIn PDF document text
    • https://c039f79f-855f-4b64-8838-30138aeea086.filesusr.com/ugd/6b78cb_4d4e34722f5d4389bc6e6c8f75fbb7cc.pdf?index=trueIn PDF document text
    • http://tolimimagag.epizy.com/tudoxutujeje.pdfIn PDF document text
    • http://zozoresupiz.epizy.com/lagu_album_bts_love_yourself_wonder.pdfIn PDF document text
    • https://39472683-7d43-4bc3-882b-0947a83fd973.filesusr.com/ugd/544c7e_f81b30dfc2be47ffaac36519d364d081.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/difineve.pdfIn PDF document text
    • http://tatovod.epizy.com/neufert_architecture_ebook_free.pdfIn PDF document text
    • https://eadb47d6-6712-4ecd-aa5a-2cdcf2d90b86.filesusr.com/ugd/c844bf_09aef3e091064e4ba62de4b7875fd575.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xokebore/bizajawosarug.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_off0000e0c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C8 5452 bytes
SHA-256: 384da90f54f7f4c25e202fb8b632cb7dfac95bb1ed764b9de4a74eccffd96286
font_01_sfnt_off0000f34f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF34F 10852 bytes
SHA-256: b9b9ac7960df02eccf3d0837bbec43b03db508c98b967a65b76d65bd60c65bc3

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