Malicious PDF — malware analysis report

Static analysis result for SHA-256 faed0b016e8dafac…

MALICIOUS

PDF

67.7 KB Created: 2020-11-21 13:22:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 38020c98fb89dbd6490b7426c31c9c4f SHA-1: 1c5b4771653869b538fef5d18315a667c00a5601 SHA-256: faed0b016e8daface8d3b7703fe2069a2b779bbb72afd8b474a7a46b9681d900
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to SEO-optimized PDF documents, suggesting a link farm or content stuffing technique. One of the primary external URIs, 'https://traffnew.ru/123?utm_term=pacific+glendale+movie+theater', is likely a lure to a malicious site. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with phishing or malware distribution.

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://traffnew.ru/123?utm_term=pacific+glendale+movie+theater PDF link annotation
    • https://mudagetani.weebly.com/uploads/1/3/4/3/134381332/jixumuvupom.pdfIn PDF document text
    • https://wotafoxig.weebly.com/uploads/1/3/4/3/134306194/kazodevoxakalu.pdfIn PDF document text
    • https://wodelegijulafa.weebly.com/uploads/1/3/4/6/134677223/rizam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373505/normal_5f937b6dbb09e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415531/normal_5fa93c27574f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449402/normal_5f9eca7f2a4d9.pdfIn PDF document text
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/1799969.pdfIn PDF document text
    • https://porelananov.weebly.com/uploads/1/3/0/7/130775759/pesasulidi-xomuwebadaga-setomute-falijo.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/baxegezivumi/behavioral_based_interviewing_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/game_hacking_tools_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/taturi/bangladeshi_video_song_album.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/zazijowakifida.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/82461871580.pdfIn PDF document text
    • https://s3.amazonaws.com/fakuguvil/xiniruxufapurag.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_off0000cd0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD0D 5320 bytes
SHA-256: 45831db40f9c27675cd4a7cc2302050b01a28894dde6dfd9bcdea93b930d86b0
font_01_sfnt_off0000df04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF04 10424 bytes
SHA-256: 93e911dea448e0d4f28ba04719f683c8367f362b92df519f7fe813ff61b00f11

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