Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7eba7a9376f7397…

MALICIOUS

PDF

79.9 KB Created: 2020-11-10 22:15:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 398b4732a54187552a7fb4004806d02e SHA-1: 91630324011f4ce474350d17d56018323e8ed5b8 SHA-256: a7eba7a9376f739731ffc24c2d1219f9cbcc232677e39e5131ff1626aa5678bc
154 Risk Score

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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/123?keyword=igloo+sportsman+duffel+bag+cooler+reviews In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366302/normal_5f8763051af44.pdfIn PDF document text
    • https://tovozilulu.weebly.com/uploads/1/3/0/8/130873983/3e2219882b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417997/normal_5f976efb9e611.pdfIn PDF document text
    • https://xukolewijox.weebly.com/uploads/1/3/4/3/134320036/4358731.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409238/normal_5f96f16ee770e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382966/normal_5f9985f6a3a1e.pdfIn PDF document text
    • https://rolawopu.weebly.com/uploads/1/3/4/3/134317168/3f012bc8732865.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/d0fb387b-c705-4d34-8053-9fb8eeb9065c/pasetololonusepanogu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57bd1bf5-f9bf-4bb7-957c-663b3cfc8607/nolukajunowofizenifo.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/saco_little_league_softball.pdfIn PDF document text
    • https://s3.amazonaws.com/juvosi/7887526055.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/uss_answer_key_2019_download.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_off0000fa33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA33 5704 bytes
SHA-256: 4c5ea5541a768436eadf33dae0ae6e4aa7ce407a4dd15950ec95fee5a6dce30c
font_01_sfnt_off00010d9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D9C 10936 bytes
SHA-256: 95e2e8c0fb89eb07ae6b6a27c21ff4799cf08dd86cfce1f70998bab70681ac70