Malicious PDF — malware analysis report

Static analysis result for SHA-256 230be59f9588cb81…

MALICIOUS

PDF

74.2 KB Created: 2021-04-09 05:13:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 35b2cc036081d20afc5b877ad0b8f96f SHA-1: 803436b94cf37ea042e2eca4ed440728031026d2 SHA-256: 230be59f9588cb817e28ea246a3a919e153a332a7c7c04ab9f708a05579db80f
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/strik?utm_term=samsung+vrt+top+load+washer+user+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4378605/normal_5fe04c78d0d2b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368489/normal_5fef89c5b1058.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446273/normal_604499574ed28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425506/normal_602237a229b9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369777/normal_604b1afd0aca7.pdfIn PDF document text
    • https://sojagimizalafar.weebly.com/uploads/1/3/5/3/135317111/pubuvuxiwoda.pdfIn PDF document text
    • https://cdn.sqhk.co/numisezopo/3GgjtXK/piluxifinabiwozetata.pdfIn PDF document text
    • https://cdn.sqhk.co/viwiratoposu/hjgjaYS/8016821785.pdfIn PDF document text
    • https://cdn.sqhk.co/kivipemo/gciihgY/luzelak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380076/normal_5fe1c8b1e1d70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384633/normal_5fd660c10650f.pdfIn PDF document text
    • https://rolafaxamowoti.weebly.com/uploads/1/3/4/9/134903079/764125d5ff.pdfIn PDF document text
    • https://sikupawabur.weebly.com/uploads/1/3/4/6/134624396/pejarosajabegibet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414491/normal_606d4f59c9a84.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473419/normal_5fdeedf10d64a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462093/normal_60132ce91d9f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500183/normal_5ff8a2e09db2d.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/golepe/31223723022.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/what_battery_for_parrot_mki9200.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4AE 5628 bytes
SHA-256: 6cf88b622fbdd4febce5d5f8a142736338b1cc52d1b788ece606fc2f60e94f33
font_01_sfnt_off0000f7b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B7 10492 bytes
SHA-256: d37989d3ab2ac7d2e93939a02ac04a6cc86af0e633ba4b787c84fe0bea999b11

Open this report in the interactive analyzer, or submit your own file for analysis.