Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba8010e24974a712…

MALICIOUS

PDF

69.9 KB Created: 2020-11-22 00:10:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e4388648356567302d5ddb474e4a2b59 SHA-1: 9d3b50dccec5bb0740e72ab662427417c041dcdc SHA-256: ba8010e24974a712b58d4ce1a3aedaeef83b8626ae1713ee335bc39388343891
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://traffmen.ru/aws?utm_term=google+sheets+to+do+list+template'. This URL is likely used to deliver a malicious payload or redirect the user to a phishing site. The ML classifier also strongly flagged this PDF as malicious, supporting the phishing pretext.

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/aws?utm_term=google+sheets+to+do+list+template In PDF document text
    • https://cdn-cms.f-static.net/uploads/4381748/normal_5f96e233b6688.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481285/normal_5fa7c71319140.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422386/normal_5f99a8780ad30.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/2efe10a0-bd8c-4b51-ae6c-5e9b78fbfdbe/siwanovomutubi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72192ffd-c5ce-475a-b9b3-ad1961348909/wokifigibironuziniz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79d44543-1f00-473a-ae48-2827710fa61e/atlanta_falcon_kroy_biermann.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/88160208811.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8aef2148-0a05-4b44-bd60-d6b9bce15f01/34622165663.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77bd7e19-c115-4ae8-b357-db873d46b1a3/10757749004.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8996a73e-451b-46ae-845d-c28ec97f0fdf/virtual_audio_cable_full.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/adam_smith_absolute_advantage_theory.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c05d3cec-2989-49b8-877e-5da42e096889/64688195360.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_off0000d6e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6E6 5308 bytes
SHA-256: 05fb401c3d68733930b435259a9e92a5202343187ae96528608e5993f3c1d1fe
font_01_sfnt_off0000e8cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8CF 9968 bytes
SHA-256: 6dfacea73ee3cf774f357d5e558ed1bbc13fda059a4ab9c5494b0b0da1292245

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