Malicious PDF — malware analysis report

Static analysis result for SHA-256 080d6f661f589a05…

MALICIOUS

PDF

78.1 KB Created: 2021-03-22 11:14:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3dbf937ecd1beba9a3102a0201cb0e3c SHA-1: 981e0ad82962b80b3e63aae8908cfa07525e244e SHA-256: 080d6f661f589a056a0bc675be8245baabcb209231c914058ef2df249ddfc52c
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 0.9996

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://dafemum.ru/strik?utm_term=titulo+reconstruido+que+significa PDF link annotation
    • https://cdn.sqhk.co/widiroje/haoBjgy/royal_battletown_mod_apk_download_happymod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451929/normal_60248d7baa226.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478928/normal_5fe753cb9a28d.pdfIn PDF document text
    • http://domavera.ru/melhores_cursos_de_ingles_online_pagosnkw68.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374517/normal_60099a89503dc.pdfIn PDF document text
    • https://cdn.sqhk.co/moturalogupe/bVhdXVV/palozimemo.pdfIn PDF document text
    • http://vipmanmarket.space/rutebunugapesisugilec1l80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422877/normal_601702099e526.pdfIn PDF document text
    • http://insuranceautousa.com/civil_engineering_reference_manual_usedsz1wq.pdfIn PDF document text
    • http://autobuff.xyz/74452590771clnrb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387411/normal_603af6cbc9f61.pdfIn PDF document text
    • http://trening-ekaterinodar.ru/wedowonos72fm.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/443a5551-05bb-476c-8c48-c7a0a3b3eeaf/97860654770.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0387354-328f-4cdb-9b1d-4150df35deda/23548247713.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70efd24d-f6ab-4329-b367-7aa004f294b7/65819629133.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/javascript_template_literal_conditional.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c52cf198-0fed-4bf7-b48e-fa56b80c1ab3/nijoxoxukukes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c587f578-8a4b-4cde-8394-dbc68482b282/how_does_it_feel_to_be_kind.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b78dd4b6-b783-4f7b-92ce-4a628cd4b4b7/zanidudawugogijetumomi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c95bffa9-2417-4b2b-a036-c2593518c2d4/persuasive_letter_rubric.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/marvel_live_wallpaper_iphone_x.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/what_causes_a_p0128_code.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_off0000f0bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0BF 5264 bytes
SHA-256: 1e663a036ff867ad30d589f9ec11fe13443d23455712b14dbab837560db64760
font_01_sfnt_off000102ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102AC 11800 bytes
SHA-256: 0537f58a2ef488d3d32e6a2e91a6fd36d62c1ba98d52dc53c9bccd45ad49da7e

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