Malicious PDF — malware analysis report

Static analysis result for SHA-256 47a0dab23c8c08c9…

MALICIOUS

PDF

50.5 KB Created: 2020-11-07 13:44:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c6081394de51a6eae0888bf97d7490d9 SHA-1: 1d2362f3fa1ad2258ed98a4c989b378c813b6cb2 SHA-256: 47a0dab23c8c08c9ccda9e599ac4a09dd690ea3500b6429c7fd776f11015f203
96 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common technique for SEO spam or redirecting users to malicious sites. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs further supports this. While no scripts were explicitly extracted, the PDF structure and link farm heuristic suggest an attempt to manipulate search engine rankings or lead users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffking.ru/123?keyword=word+within+the+word+list+19+pdf
    • https://ziwavolenexajid.weebly.com/uploads/1/3/4/5/134503628/455956.pdf
    • https://cdn-cms.f-static.net/uploads/4387031/normal_5f9ea8e575354.pdf
    • https://cdn-cms.f-static.net/uploads/4366033/normal_5f8e12658bb7d.pdf
    • https://cdn-cms.f-static.net/uploads/4374860/normal_5f8c40b1e6a0e.pdf
    • https://cdn-cms.f-static.net/uploads/4413842/normal_5fa086eae640b.pdf
    • https://cdn-cms.f-static.net/uploads/4373502/normal_5f8a49607bdbe.pdf
    • https://cdn-cms.f-static.net/uploads/4460461/normal_5fa3848f4b19f.pdf
    • https://biwomewiwuxe.weebly.com/uploads/1/3/4/1/134131409/lazetipu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bevarolimesale/51757835072.pdf
    • https://s3.amazonaws.com/luresimosip/mla_song_citation_in_text.pdf
    • https://s3.amazonaws.com/tifuwuw/british_english_received_pronunciation.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_off0000871f.bin
5b081938b86c11dd4330cafae8227be087562e1959c17e28206006bda6c07a51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x871F 5232 bytes
font_01_sfnt_off00009904.bin
858854718ed40a7d35f5c4b5149c1885caa610edc8a8466d5ee1000576e5ff3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9904 10628 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.