Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e4f9263a504bb65…

MALICIOUS

PDF

68.2 KB Created: 2020-11-13 01:29:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 083ea96d39311e102dbc199cdf5f6ba2 SHA-1: 9da597488dcc578aa2909abf33cd8ebbd6a9144c SHA-256: 5e4f9263a504bb65719e595a71ff3d1ae35d047d74d4bdb6297c5f1f945081f3
154 Risk Score

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 the file as malicious. The document body, though heavily obfuscated, contains text related to the malicious URL, suggesting a phishing or malware lure.

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/123?utm_term=barter+theater+abingdon+va+history In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383128/normal_5fa80fc1dc8c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379043/normal_5f957bd185ed7.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/4cc9e884-2ebe-41b3-978a-5d9df9ae5965/myra_estrin_levine.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/vanuxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff6fb3e7-00c5-4fdf-8c4d-06344e4a3417/novujafebume.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/hernia_umbilikalis_anak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1784df1c-cc0b-4041-8e0f-8f12156d4dd4/vowujujokebamamuku.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/40695107076.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbc475e8-e485-4b66-9af4-8f496651b43e/nopise.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6230dd3-435d-4fb3-92c2-61d9ecd077c1/raduxixenafogineri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eedd48f5-c6e3-4a79-8668-39b00cf3b3fd/9680125481.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/79200955450.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_off0000ce1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE1E 5404 bytes
SHA-256: 3d44c19694a55e3c177dc3c4722c40528c8dcaa54005623ee8d9f0164e02341c
font_01_sfnt_off0000e084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE084 10476 bytes
SHA-256: b7987c2f61a437febffff47ebe9f997482f66d275e332b1779ab22cc957a4d20