Malicious PDF — malware analysis report

Static analysis result for SHA-256 77495e6f986d764d…

MALICIOUS

PDF

73.4 KB Created: 2020-11-30 13:21:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: d9a401a9ca8abc6507ae754d7affda1a SHA-1: 9664c48bba1e55954993d8e40d92b39b7cb87e0a SHA-256: 77495e6f986d764d749ab9a027e66e00600dbbbfa9ec98276f868b678cf0f171
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 'ggtraff.ru'. ML classification and ClamAV also flagged this file as malicious. The embedded URL is likely used to lure the user to a phishing site or download a secondary payload.

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://ggtraff.ru/aws?utm_term=iosh+risk+assessment+project+example+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4410989/normal_5fa3c1f2cb9bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448995/normal_5fa9c5902918c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451033/normal_5fbed08aebe27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379856/normal_5f8fb7e9be79e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485799/normal_5fc4c3fb89746.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4995cb3e0f577145966a/1606371734207/legacy_assurance_plan_facebook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3754b11b-06be-422c-8b48-b5d8a57b2316/reverse_phone_lookup_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/tosasugokod/88676317747.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e99ca681-04d2-44e1-997f-8744ad6f41a7/3835190083.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11e3fbf4-5f55-4b67-95ae-e149e597172c/votemupedaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16a7d88f-6130-4805-bbb6-764f2e2bf23a/45683783870.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c195dca-dca8-48dc-9fad-c429af7a91e2/slendytubbies_2_apk_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dd131452f90b7fe52ecb/t/5fc15f7a145a8629dce456e7/1606508411680/enchantment_spells_5e.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_off0000e1f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F5 5540 bytes
SHA-256: 5f6b51f6d22eae562d59ff18adf261394e1e503f49d15532c626a21064473827
font_01_sfnt_off0000f4ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4AE 10396 bytes
SHA-256: 922ddf35305c049b2f0403f34929b951952a04a97fd7da1519a91260f6fff696

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