Malicious PDF — malware analysis report

Static analysis result for SHA-256 daf30794ff185812…

MALICIOUS

PDF

76.5 KB Created: 2021-02-16 17:53:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 86455c1e4e3b2c7a8758c17ae4c0188f SHA-1: 06913556b3af098681c42e0153417dc887b19eae SHA-256: daf30794ff1858129e4be48739cf083d2f998ed41e8f9be26ef70a866751356a
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://maypoin.ru/123?utm_term=casio+salarms+world+time+3157+sgw-100 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4480173/normal_5fffd828cc267.pdfIn PDF document text
    • http://vagoneviwesum.66ghz.com/gingivitis_ulcero_necrotizante.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403673/normal_5fdd9d8216ffe.pdfIn PDF document text
    • https://finuvowevemez.weebly.com/uploads/1/3/5/3/135397693/bejodobudodinex-zovisate.pdfIn PDF document text
    • https://kabulemumolitu.weebly.com/uploads/1/3/4/8/134869515/4d522591094259.pdfIn PDF document text
    • http://satofaxa.iblogger.org/76611350735.pdfIn PDF document text
    • http://nubupexajed.iblogger.org/a_practical_guide_to_evil_novel.pdfIn PDF document text
    • https://zejenabo.weebly.com/uploads/1/3/0/9/130969472/2025656.pdfIn PDF document text
    • https://burufazifefep.weebly.com/uploads/1/3/4/5/134584298/c5af72e.pdfIn PDF document text
    • https://zozisumuwukow.weebly.com/uploads/1/3/1/3/131380825/gisumugezilofewexur.pdfIn PDF document text
    • https://texifafotolatip.weebly.com/uploads/1/3/4/7/134764930/rigasowixuju.pdfIn PDF document text
    • https://waxizeno.weebly.com/uploads/1/3/0/8/130814339/8489568.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466413/normal_5fd8c0a33aa07.pdfIn PDF document text
    • https://takoremitivo.weebly.com/uploads/1/3/0/7/130738963/litazozuvu.pdfIn PDF document text
    • https://turudesufexo.weebly.com/uploads/1/3/4/1/134131379/2857389.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://doruxujegajaso.rf.gd/wabinuwowikubuxedaduwafov.pdfIn PDF document text
    • http://pakimafagi.epizy.com/98981605666.pdfIn PDF document text
    • http://wetizizokixo.epizy.com/jemopexidatasabosavo.pdfIn PDF document text
    • http://runapapaxezupow.rf.gd/android_phone_mockup_online.pdfIn PDF document text
    • http://kiboxanemez.rf.gd/riwodebabopebifetijiw.pdfIn PDF document text
    • http://sidiwen.epizy.com/64750241475.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3BE 5736 bytes
SHA-256: 2fdf96a18fa82ced7e09438d035c19a51aedfb016969302e4ec74a09eba63b81
font_01_sfnt_off0000e751.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE751 11704 bytes
SHA-256: a7dfc97af87b82c679c01a96a9177067efadcc3a6bfed26d2452276527e33e64
font_02_sfnt_off00010ddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DDF 16036 bytes
SHA-256: bc1c1644e30597ae0beaac312b9749a82b64e26c109397326cdc67fdbaf2fe17

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