Malicious PDF — malware analysis report

Static analysis result for SHA-256 f65d53d00ba1d8d7…

MALICIOUS

PDF

48.5 KB Created: 2020-10-14 17:30:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 9e63d8b89e695d077f9f6db8e44b520a SHA-1: f68a0d094c5e93cbe557810af37c6ed9db00dc1e SHA-256: f65d53d00ba1d8d75c7a4a2374d0a24852fbbb6a0fd1da86be4b2eda5170eab2
94 Risk Score

Malware Insights

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

The PDF contains a link to known malicious redirector infrastructure, specifically 'https://ggtraff.ru/pify?keyword=examples+of+sentences+using+connectives+pdf'. This indicates the document is likely part of a phishing or malware distribution campaign. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is a high-priority indicator.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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/pify?keyword=examples+of+sentences+using+connectives+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365552/normal_5f86f5e3e7ffd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365639/normal_5f8707a7be270.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f86f46b57e91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5f870a013777d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_5f86f94b367b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365539/normal_5f8703591a485.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365635/normal_5f86f6a22ecb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5f86f57f193b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365652/normal_5f8709fe41e6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365547/normal_5f870b6f504c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366033/normal_5f870a1367e6d.pdfIn PDF document text
    • https://site-1041404.mozfiles.com/files/1041404/77708105819.pdfIn PDF document text
    • https://site-1041927.mozfiles.com/files/1041927/10735368903.pdfIn PDF document text
    • https://site-1043286.mozfiles.com/files/1043286/sememarifefi.pdfIn PDF document text
    • https://site-1039740.mozfiles.com/files/1039740/logefudanepata.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_5f8705d6cd4df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365545/normal_5f870a489a708.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366045/normal_5f86fed07983d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365628/normal_5f86f4fe347a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f86f50f12012.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366011/normal_5f8708a28c963.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365636/normal_5f86f46d25d58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365586/normal_5f86f4b859e9a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7201 5348 bytes
SHA-256: 08f00553acd2e807b5abf7921afa83c73866e2179d930fc47d8c329479f1e54e
font_01_sfnt_off00008431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8431 9944 bytes
SHA-256: a44ca4b57c68b3c2395574a817f98efa05a4193c48ef105fa444d4d3f7c91b68
font_02_sfnt_off0000a62f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA62F 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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