Malicious PDF — malware analysis report

Static analysis result for SHA-256 93d2e6dc361ae6a1…

MALICIOUS

PDF

72.2 KB Created: 2021-02-17 08:51:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ec5f67448c69806f8828791debd21421 SHA-1: 5a26dc88f2a5d53504b6f557f0a5d5a62fede56c SHA-256: 93d2e6dc361ae6a1d2a6630c12b404ade5c816baeff252b8356445b1c79e0e38
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an invoice-themed lure. 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 0.9998

Heuristics 6

  • 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 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/strik?utm_term=epson+sc-p8000+price PDF link annotation
    • https://jifilebipik.weebly.com/uploads/1/3/4/3/134375607/xakixuvokaruvigeba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413363/normal_5ffa79965111e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422918/normal_600a11cb5a6f9.pdfIn PDF document text
    • https://cdn.sqhk.co/jutafegobexe/ihXrngj/recharge_mobile_in_nepal_from_canada.pdfIn PDF document text
    • http://samelike.site/ant_colony_optimization_tutorialjwvro.pdfIn PDF document text
    • https://cdn.sqhk.co/putizimetiwe/Djhjcu0/42694995269.pdfIn PDF document text
    • https://xutepokukofegik.weebly.com/uploads/1/3/5/3/135391302/e35bbbe12.pdfIn PDF document text
    • https://luzulobopado.weebly.com/uploads/1/3/2/6/132681737/046c97ac2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403421/normal_5ff66c732b00b.pdfIn PDF document text
    • https://xoberaditide.weebly.com/uploads/1/3/4/6/134645794/pivazafop.pdfIn PDF document text
    • https://cdn.sqhk.co/pirujezexod/CYfjbii/roku_ultra_black_friday.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416299/normal_5ffd26107b850.pdfIn PDF document text
    • http://lifeit.pro/57304351052mhilk.pdfIn PDF document text
    • https://lugifepitel.weebly.com/uploads/1/3/2/7/132710690/xekusomid-lebifuvukufidu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474987/normal_5fff5f5aa96a0.pdfIn PDF document text
    • https://cdn.sqhk.co/vizelupavew/Ehbuij8/renaissance_history_books.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481286/normal_5fcc0afc85fb2.pdfIn PDF document text
    • https://cdn.sqhk.co/pemenixa/gje5Ybm/lion_simulator_rampage_city_attacks.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dbbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBBD 5008 bytes
SHA-256: 97a9fef0d060dd01f76f9123cf28a7d4f3cd881c2bcc598e2920f8e5ddd08cad
font_01_sfnt_off0000ece8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECE8 11448 bytes
SHA-256: dcb946efee6bf2e1ab5949a535b94c3ea3d29553317703ce6e6764e92b154402

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