Malicious PDF — malware analysis report

Static analysis result for SHA-256 1348de675ae57459…

MALICIOUS

PDF

102.7 KB Created: 2020-11-16 23:26:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 39d249ce9dfdf1c72ac0b246ea334c69 SHA-1: 14375c5968809e70749ad9ca285c640d2bc5dff1 SHA-256: 1348de675ae57459d856ff1e5949a2790022561a38abc65fa9849ac6b09bc7f8
156 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. 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 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.
  • 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://traffset.ru/123?utm_term=maine+mega+millions+previous+winning+numbers PDF link annotation
    • https://nogefarixuri.weebly.com/uploads/1/3/4/6/134647247/ff43d04289.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451766/normal_5fae96cf4c009.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368481/normal_5f88aace96ee4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379984/normal_5fa368f7359df.pdfIn PDF document text
    • https://veborikaja.weebly.com/uploads/1/3/4/3/134317734/gadexojofev-popeda-jidiz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393635/normal_5f9a66c112002.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/bexuxewimibilub.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/mupezabeb.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/mla_in_text_citation_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/66076332354.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/91441185989.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/weed_firm_2_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/19336987290.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/william_beebe_bathysphere_fish.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/cartier_love_bracelet_replica_gold.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_off00015468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15468 5436 bytes
SHA-256: 66231a8f81ca857811a6994b9e3416f3293fb00a22712edd57328d7e438a9a25
font_01_sfnt_off000166f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x166F0 11304 bytes
SHA-256: 982fcb459da5fd2f6c2d6789e80a1394f5360ba258e5bf401be5ac5259bd6fb2

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