Malicious PDF — malware analysis report

Static analysis result for SHA-256 66af27e60e84324d…

MALICIOUS

PDF

67.1 KB Created: 2020-11-11 05:40:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 847afb72ea703cf36c6de5fe4a59b882 SHA-1: 96101f4476c484d1535492d80fe10ea234530e1b SHA-256: 66af27e60e84324dc6fa907a1af8408054ca7af5c3ea9adf43f8913b77856d66
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 0.9998

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://traffnew.ru/aws?keyword=madrid+spain+latitude PDF link annotation
    • https://gobiduromom.weebly.com/uploads/1/3/4/6/134660247/mejadogol.pdfIn PDF document text
    • https://vezupololepabuk.weebly.com/uploads/1/3/4/6/134600483/pobijagigo-tonipadi-pitalexazide-dodanudeso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448731/normal_5fa14bf4f08b1.pdfIn PDF document text
    • https://boxavukexuzar.weebly.com/uploads/1/3/0/7/130775797/bejubijuke.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383687/normal_5f8d010aebf2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447270/normal_5f9f8219d3810.pdfIn PDF document text
    • https://dojeviwenos.weebly.com/uploads/1/3/4/4/134491393/pakubewobuv.pdfIn PDF document text
    • https://folukufisika.weebly.com/uploads/1/3/1/3/131384255/d41a80ef933e7be.pdfIn PDF document text
    • https://lumozilupive.weebly.com/uploads/1/3/4/3/134336046/8055987.pdfIn PDF document text
    • https://sogovowezop.weebly.com/uploads/1/3/4/3/134324678/7bbe64f62fa6579.pdfIn PDF document text
    • https://wimixexaselu.weebly.com/uploads/1/3/4/3/134324609/4a3a1e0e13704.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/0c218903-a9d6-4523-8f81-d105317a034c/suwivaxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57117806-cdce-4f6d-b2bd-a7186fd0c13b/mrs_flowers_maya_angelou_story.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_off0000cb02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB02 4960 bytes
SHA-256: 4276f3ba8efee1092d20e9ee98008cecbd29453986230fa9220af00c161394eb
font_01_sfnt_off0000dbf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF7 11028 bytes
SHA-256: a319bcfe19b7dd12b75d36f15360be453541a3a1f16f7a520c7bd59085b607c4

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