Malicious PDF — malware analysis report

Static analysis result for SHA-256 af8fdf34da4874ae…

MALICIOUS

PDF

38.9 KB Created: 2020-11-05 16:15:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eadfa1fc338fac9f79222f0b700fae08 SHA-1: 2c8aac8237607f0eee9686f998ce5513e63c80a2 SHA-256: af8fdf34da4874aefb0e8c4c0332c1c83c2b3f837bb776e7c1d500f1297e5693
102 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, traffmen.ru, which is designed to lead users to malicious content. The presence of urgency language in the document body further supports a phishing or social engineering attack vector. While no scripts were extracted, the ML classifier and redirector link strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://traffmen.ru/aws?keyword=shih+tzu+breeders+in+va
    • https://fidurelofomus.weebly.com/uploads/1/3/0/7/130740547/gonan.pdf
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/9232432.pdf
    • https://panidulupeju.weebly.com/uploads/1/3/0/9/130969186/7f4ab9f6cbd342.pdf
    • https://porujigiwafixuf.weebly.com/uploads/1/3/4/3/134373975/968be7619ce38d9.pdf
    • https://zepixufiguw.weebly.com/uploads/1/3/4/1/134108583/puwowakekof.pdf
    • https://dodimugu.weebly.com/uploads/1/3/4/4/134483739/373452.pdf
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/3409757.pdf
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/matuwaduwuvibad.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/57e91a48-7f14-4870-80b5-6d38b908a662/lumukikixoxefad.pdf
    • https://uploads.strikinglycdn.com/files/ca342e58-b4ac-4e1e-b9f6-d5f0513e95e0/isdone._dll_error_unarc._dll_error-_11.pdf
    • https://uploads.strikinglycdn.com/files/59da7417-f418-4974-8589-44f47d8919c3/40071436898.pdf
    • https://s3.amazonaws.com/tadevewuju/vidmate_app_for_laptop_windows_10.pdf
    • https://uploads.strikinglycdn.com/files/52be694c-aa29-41ae-a4ca-2706112cdf60/40516596410.pdf
    • https://uploads.strikinglycdn.com/files/187724a8-625e-4087-ae94-7b25b879f1d9/29070256134.pdf
    • https://uploads.strikinglycdn.com/files/e98d391f-aa5a-4259-a574-30a0da735552/sixuravotabisesaz.pdf
    • https://uploads.strikinglycdn.com/files/4cb072ca-fe94-4321-a51d-7783da86e5c7/35269991057.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_off00005a60.bin
d78754aceb3533513c374104103a42e7c2b6321cf55856ac94c4e8d28098012b
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A60 5236 bytes
font_01_sfnt_off00006c2b.bin
d0ae3a15c2479d379a6cbc9c602a9b1241e2fe7c01c2ba1eb64c48df1455a9cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2B 10280 bytes