Malicious PDF — malware analysis report

Static analysis result for SHA-256 268ed4e3015c58b8…

MALICIOUS

PDF

71.9 KB Created: 2020-12-02 14:40:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4313a54345dc5024c7924a5325237d71 SHA-1: 5faf5aaf7b4021f8f92f4529ab9f6284c609ddfc SHA-256: 268ed4e3015c58b8e40ba8f0fef94ca084b98bd3973e867c016c824a12e6d869
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ggtraff.ru, which is likely intended to lead the user to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded malicious link suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/strik?utm_term=what+motherboard+works+with+ryzen+7+3700x
    • https://static.s123-cdn-static.com/uploads/4413370/normal_5fc40a661f37a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ddfae7ae-501e-404d-93ac-ebb679a272bb/82821457873.pdf
    • https://uploads.strikinglycdn.com/files/fe4e4c81-7b97-4142-b4b3-84dfc97fdba9/5306839460.pdf
    • https://static1.squarespace.com/static/5fc1c3d140f1034a5caf136a/t/5fc3e8ee08845d092401f9ec/1606674671003/65906418030.pdf
    • https://uploads.strikinglycdn.com/files/2ce3f397-a5dd-402b-ba0f-899f6739bc01/edgewood_magnet_school.pdf
    • https://s3.amazonaws.com/petikamov/mejugikuxubulunan.pdf
    • https://s3.amazonaws.com/vexosafugunu/armageddon_1998_free.pdf
    • https://uploads.strikinglycdn.com/files/b05f9133-76e2-4fc3-8736-c5b3509c86ef/62205974376.pdf
    • https://s3.amazonaws.com/memul/universal_island_of_adventure_orlando_map_2018.pdf
    • https://uploads.strikinglycdn.com/files/642c2ac4-5f09-48a7-870d-2a18643f011b/miss_and_cie.pdf
    • https://static1.squarespace.com/static/5fc0d70dc14dfd36fef128e0/t/5fc230c95147b148047c2ee7/1606561994717/kepler_orbital_period_equation.pdf
    • https://s3.amazonaws.com/jebokizez/sinaxuk.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_off0000db82.bin
fc82d3d2cc85408427b9fe65b1bfd22207d5ed5f862cf1dd413ef08a64b2938a
pdf-font-stream PDF embedded font (sfnt) at offset 0xDB82 5948 bytes
font_01_sfnt_off0000efc5.bin
18fe247eb58ba53af2d2dcb791ee2786bcf9332f181dc7bdae40a5333a5ecb0d
pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC5 10260 bytes