Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd9697805d48e647…

MALICIOUS

PDF

73.9 KB Created: 2021-03-14 20:56:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0259fef77088cffdbfce728d5203515 SHA-1: 7839a51757aa234a6e990b4bbc8d386f923cf4a3 SHA-256: fd9697805d48e64778a1f2f6a009d9459bf1e88078747174ee8261d543fde74c
96 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one directly linking to a search result page for a product manual, suggesting a phishing or scam lure. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of numerous external links and the PDF structure itself point towards an attempt to redirect the user to a malicious site, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://zajinet.ru/wix?keyword=motorola+h500+bluetooth+manual
    • https://lazumuron.weebly.com/uploads/1/3/4/8/134863931/nejajarototeguro.pdf
    • https://dawekemukodo.weebly.com/uploads/1/3/4/4/134491409/tafumudibinipis.pdf
    • https://static.s123-cdn-static.com/uploads/4373297/normal_5fdfd60411453.pdf
    • https://sovufejado.weebly.com/uploads/1/3/0/7/130740048/nubowedagub.pdf
    • https://static.s123-cdn-static.com/uploads/4470692/normal_5fe3e777b3284.pdf
    • https://cdn-cms.f-static.net/uploads/4463279/normal_604da4d468ef9.pdf
    • https://cdn-cms.f-static.net/uploads/4414331/normal_6026534a54fa8.pdf
    • https://telisawe.weebly.com/uploads/1/3/4/4/134466193/wilalipal.pdf
    • https://wulilunize.weebly.com/uploads/1/3/1/0/131071037/1145508.pdf
    • https://cdn-cms.f-static.net/uploads/4420028/normal_603872058191a.pdf
    • https://cdn-cms.f-static.net/uploads/4415767/normal_602e117d74dce.pdf
    • https://zarurirabug.weebly.com/uploads/1/3/4/3/134355130/9113202.pdf
    • https://static.s123-cdn-static.com/uploads/4484376/normal_5fc7a2db7b8e1.pdf
    • https://static.s123-cdn-static.com/uploads/4469860/normal_5ff229543c996.pdf
    • https://cdn-cms.f-static.net/uploads/4479921/normal_5fd2927c6c673.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/9699727f-3200-4115-8383-0067e3ea3f36/world_war_z_game_ps4_controls.pdf
    • https://uploads.strikinglycdn.com/files/97f91e1a-5f9f-4903-a768-6b5705357319/79029064623.pdf
    • https://uploads.strikinglycdn.com/files/26010452-030c-463f-ab33-ccf0cf427a2f/zaxulufin.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e37e.bin
256b9d59a4b4f3161e070b6e7dd8b4e52f3e99dfee79659624b9167df1d3c4cc
pdf-font-stream PDF embedded font (sfnt) at offset 0xE37E 5160 bytes
font_01_sfnt_off0000f4e5.bin
6dd229102004430d896a99fc4c2e9695a60050cd51950a8458ea91dfd58a66e3
pdf-font-stream PDF embedded font (sfnt) at offset 0xF4E5 11172 bytes