Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5d64f89ff6be37c…

MALICIOUS

PDF

74.4 KB Created: 2020-12-18 23:56:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: bac6c65207bb451fbafde4ab70fa9e46 SHA-1: 2d8fc7b5947d32dbd57e72f26feba054c10f3f25 SHA-256: d5d64f89ff6be37cf1c583155b93b3a0be92567285894b1f6129325ecadb05d8
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'ggtraff.ru'. ML classification and ClamAV also flagged this file as malicious. The embedded URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download a second-stage payload.

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
  • 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/strik?utm_term=golden+son+pierce+brown+pdf In PDF document text
    • https://mutakisutuw.weebly.com/uploads/1/3/4/7/134768563/6007969.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401723/normal_5fbf8b11172b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491437/normal_5fc35a0eba9dc.pdfIn PDF document text
    • https://zupudawuliwubil.weebly.com/uploads/1/3/4/2/134265939/tomur-vabito-putoru-munatumexuzi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477913/normal_5fd21d5967a52.pdfIn PDF document text
    • https://tumixivig.weebly.com/uploads/1/3/1/6/131636813/6595494.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/5fc0b5bec30a162e0c519083/t/5fc8a1314b97230d05118c28/1606983987665/big_bang_racing_hack_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92c9f49d-0836-4aab-a8fa-c094b1d8bd41/testmax_nutrition_recipes.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/hd_wallpaper_for_computer_desktop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65cdca39-accf-42d8-9755-4ffc0addecc8/71898597534.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e1c7e88-7d75-4704-9ea9-812a368ea5ad/50537019702.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD162 5200 bytes
SHA-256: 253235f208ce173ca7d149921f7e7502692641a8649de58691ab9e175e9a64d8
font_01_sfnt_off0000e334.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE334 10156 bytes
SHA-256: c38f8b8e79f541e2d77d12ac22d2209b26dbcf79a4dac979425b89660c696fcb
font_02_sfnt_off00010667.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10667 16092 bytes
SHA-256: c9557d91917e40dbb2ce09b7ef560a04a9a832ffe2ebcac6b50408a58351272e

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