Malicious PDF — malware analysis report

Static analysis result for SHA-256 79650a6835bc12bf…

MALICIOUS

PDF

76.5 KB Created: 2020-12-18 03:52:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2d7ab34b17a5b2d893841138e583f973 SHA-1: be230a8ad9583327241c65db14017c6cfb781c5e SHA-256: 79650a6835bc12bf43f82bfb70a42976cfb41d3f451e538a7e43d5bd41987899
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, identified as 'ggtraff.ru'. This suggests the document is designed to phish users by directing them to a malicious site under the guise of providing a free template. The ML classifier and ClamAV detection further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=free+background+template+for+powerpoint+presentation
    • https://cdn-cms.f-static.net/uploads/4491933/normal_5fb562ef103c8.pdf
    • https://static.s123-cdn-static.com/uploads/4378390/normal_5fcd6e3745194.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fbffe61bf71053ccb0b2b06/t/5fc1a889e18c5c478e39f6b5/1606527113881/sulekaf.pdf
    • https://uploads.strikinglycdn.com/files/de1999b3-1e02-4344-bd73-3d798e960960/utorrent_free_download_hindi_movies.pdf
    • https://uploads.strikinglycdn.com/files/ca0c346b-aa41-4d83-89da-86208e19959c/jexowusodazowijob.pdf
    • https://static1.squarespace.com/static/5fc365b22e34347c70542066/t/5fcaf0ee9d29b56e4df869a6/1607135471822/washington_lions_hockey_schedule.pdf
    • https://uploads.strikinglycdn.com/files/9f4a074f-ca78-4cb3-8627-6c38d272f9e3/20516499567.pdf
    • https://uploads.strikinglycdn.com/files/39daf807-7de2-426e-b4d7-7273820b1f9b/85741839660.pdf
    • https://uploads.strikinglycdn.com/files/00aba9db-3ab9-48eb-8eef-1d882c8557e7/pemidizek.pdf
    • https://static1.squarespace.com/static/5fc01ccfc14dfd36feed28e9/t/5fc3b7f4a97599144e69a9e7/1606662132642/bekekenuzezujibafenin.pdf
    • https://uploads.strikinglycdn.com/files/e4f642ed-7529-4c6d-9912-30e369ba95a9/pufowapob.pdf
    • https://uploads.strikinglycdn.com/files/9ff71dbb-314f-446a-9c02-c2c0a8fbb036/kirakira_precure_a_la_mode_op.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_off0000eace.bin
95ea131c64cf4774fa80bb3225f0f4ee0098cba5248cdfeea87b5cc58d1fe5f4
pdf-font-stream PDF embedded font (sfnt) at offset 0xEACE 5724 bytes
font_01_sfnt_off0000fe4a.bin
4f1d1469587fd2cbe1c68ca61404485ef525688bbc51b5ee88512c91e57b92f8
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE4A 11288 bytes