Malicious PDF — malware analysis report

Static analysis result for SHA-256 60afe27c6b0872c6…

MALICIOUS

PDF

40.3 KB Created: 2020-11-01 00:13:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fcdab79ecfc6d57c4362980031606af7 SHA-1: 7db789bf0e444137482174a3f3650800c5518066 SHA-256: 60afe27c6b0872c6467f96e9faab88777bd8dd85b426e4904c101b3e5c34f2c9
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which likely serves as a lure for users to click through to a malicious site. The ML classifier also strongly indicated maliciousness. The embedded URLs suggest a phishing or malware distribution attempt, potentially disguised as educational material given the keyword in the primary URL.

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://ttraff.com/123?keyword=sadlier+oxford+vocabulary+workshop+level+e+unit+10+answers
    • https://rimosuvifakub.weebly.com/uploads/1/3/4/3/134310068/pinowufikoxux.pdf
    • https://cdn-cms.f-static.net/uploads/4390684/normal_5f9868847fb26.pdf
    • https://cdn-cms.f-static.net/uploads/4379046/normal_5f8b4d8177bee.pdf
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/metedidizuj.pdf
    • https://wipaluxeko.weebly.com/uploads/1/3/4/3/134346688/dozov-jonuzubilub-wanovajovaz.pdf
    • https://cdn-cms.f-static.net/uploads/4366346/normal_5f87660acd9df.pdf
    • https://lupolaluxu.weebly.com/uploads/1/3/2/6/132681144/vobalazev_vabusapelud_pawunamofix.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/8957f300-eaf1-46fc-8eeb-e04e9eb2c527/sofere.pdf
    • https://s3.amazonaws.com/pozokimepe/nikonos_v_repair_manual.pdf
    • https://uploads.strikinglycdn.com/files/e234a7c6-f09d-49b1-8a1b-3769bb4b4939/50098041034.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_off00005df5.bin
916db13a57c4d5a66970daa13ddc3b54d0fb4a07a5968244148ae4c96ffb8c4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF5 6064 bytes
font_01_sfnt_off000072b3.bin
51e9e3803183680c8427ea1faf55025e331072449c7ca154d5cd7b21714ec4d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72B3 9712 bytes

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