Malicious PDF — malware analysis report

Static analysis result for SHA-256 69981484c237370d…

MALICIOUS

PDF

73.6 KB Created: 2020-11-19 05:45:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d814ea27b337ae6e9c3763d00712f00f SHA-1: 1aec987faecbccff0f2f63660437c3407bf74c7f SHA-256: 69981484c237370da17de942db4cda2148a3d9e045deed3a8a019f022137538c
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics as a link farm, containing a large number of external URLs pointing to various websites, many hosted on disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or SEO spam. No scripts were extracted, but the presence of numerous external links suggests an attempt to redirect users to malicious or deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • 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://traffine.ru/123?utm_term=john+wayne+hat+the+shootist PDF link annotation
    • https://wesojejupeledaw.weebly.com/uploads/1/3/4/4/134446418/3356832.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/7337237e7b527c.pdfIn PDF document text
    • https://nodemexawek.weebly.com/uploads/1/3/4/3/134331915/zimisomujexeniw.pdfIn PDF document text
    • https://xanodupujariris.weebly.com/uploads/1/3/0/9/130969381/teximajovevogekapad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408866/normal_5fa89943204e2.pdfIn PDF document text
    • https://puxolulif.weebly.com/uploads/1/3/4/3/134356270/9947702.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417808/normal_5fb33d471e3ad.pdfIn PDF document text
    • https://dofazodasi.weebly.com/uploads/1/3/0/8/130873943/libor.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/0360ded1be14.pdfIn PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/sosuzukegejuxipom.pdfIn PDF document text
    • https://motazejiwe.weebly.com/uploads/1/3/4/2/134266269/pejajuvuramugim-pepejobuwomuvav-rukazuneb-befitenarorirax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387412/normal_5f8e55fb7b901.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/9f4101f1-4017-4497-a5e1-b6971c636c48/mavug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4896af6-6217-4017-acdb-4238fbbb0320/17508242875.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bb1ae36-7366-401a-a03f-c69855177977/90811397799.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b58ad76-8983-4504-932e-ed16d26b1d0d/un_hombre_nada_en_la_piscina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67e87429-0d2d-4ba8-86b3-4a1b0818677f/sezopinitedudujajutanasal.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_off0000e241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE241 4828 bytes
SHA-256: 83e4a00d38d5c5a23bf583ed03ac2a8d05cb78229203ecdf26f31d532ca90a31
font_01_sfnt_off0000f2c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C3 11404 bytes
SHA-256: 7b5206e3d9d5eda75826139e0a7452993a731326015970578eec1643c778230d

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