Malicious PDF — malware analysis report

Static analysis result for SHA-256 afbdd7317004100b…

MALICIOUS

PDF

84.2 KB Created: 2021-03-24 14:28:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e15f1528edfe7458888e96034f596914 SHA-1: 5c95f2b0a25fbccebacabd1deb934cd26ee54907 SHA-256: afbdd7317004100b9736cb2f5e05137099010ed1533cbed1f531b5110b7e3bfe
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://vilenefex.ru/wix?keyword=mole+mass+practice+worksheet+answers PDF link annotation
    • http://figimumagoko.mygamesonline.org/58533299675.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479226/normal_5ff573b982f17.pdfIn PDF document text
    • https://cdn.sqhk.co/togixulala/OKUhfKP/arcore_apk_apkpure.pdfIn PDF document text
    • https://bigonokefexix.weebly.com/uploads/1/3/4/5/134518339/858589.pdfIn PDF document text
    • https://cdn.sqhk.co/lolajelor/1rR2ecM/verizon_messages_app_for_pc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530429/normal_605ae849da87a.pdfIn PDF document text
    • https://mopebewugo.weebly.com/uploads/1/3/0/7/130776026/lutimokosoxit_tukika_wibanoto.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460058/normal_60208e8471a2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372073/normal_5fda93c233894.pdfIn PDF document text
    • https://cdn.sqhk.co/zotevokep/YgdDVjh/kidudogapepipidazo.pdfIn PDF document text
    • https://vesepuzimimewij.weebly.com/uploads/1/3/0/7/130776402/maxegoponefe.pdfIn PDF document text
    • http://gatowixipeba.mywebcommunity.org/majestic_gas_fireplace_blower_not_working.pdfIn PDF document text
    • https://cdn.sqhk.co/vopofuxo/Mjgic3i/77316838242.pdfIn PDF document text
    • https://wavuzujez.weebly.com/uploads/1/3/1/4/131406867/c5b358e5d0cae1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dijinisefiregot.rf.gd/xfinity_connect_app.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/aspirin_in_pregnancy_guidelines.pdfIn PDF document text
    • http://bexovivuvere.myartsonline.com/affairscloud_pocket_may_2020.pdfIn PDF document text
    • http://mokowiwar.rf.gd/72905683099.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/leggett_and_platt_falcon_adjustable_base_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/pioneer_deh-150mp_manual_espaol.pdfIn PDF document text
    • http://vexelikepe.epizy.com/best_spanish_to_english_dictionary_app.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/17903130641.pdfIn PDF document text
    • http://nosofakonitul.epizy.com/bifokibosi.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/muzofijoguridovoxejezu.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_off00010679.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10679 5336 bytes
SHA-256: bb6fc83b8b783eb593e30d5e8895ed96aa954e2e06ef92537d7fe3176b537bf0
font_01_sfnt_off0001188a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1188A 12512 bytes
SHA-256: edb78a216dba62b2e8495a1f8820009d8b3854567c3faeee2c48779830595682

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