Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2c72c019d3e3c16…

MALICIOUS

PDF

32.7 KB Created: 2020-08-23 23:23:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d181fa552241911543cc0a980e674d26 SHA-1: e6db0fa9d06ea8f4eb7c303a0e25d10af7771c1d SHA-256: d2c72c019d3e3c16a8ff33a28f7520deef808f4df641dc3ba0094712e85aaeb1
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with many pointing to a link farm hosted on cdn.shopify.com. Crucially, one embedded link redirects to the malicious domain ttraff.com, indicating a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

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.
  • 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.
  • 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/pify?keyword=aligning+punch+information
    • http://files.mckinneypressurewashing.com/uploads/1/3/1/4/131438539/toxekunemo-kezapu.pdf
    • http://jikerodon.alloexo.com/uploads/1/3/2/6/132680813/8c104e694.pdf
    • https://cdn.shopify.com/s/files/1/0449/9665/7320/files/ditugagujosav.pdf
    • https://cdn.shopify.com/s/files/1/0437/9967/5040/files/22244389677.pdf
    • https://cdn.shopify.com/s/files/1/0428/1165/4307/files/apa_format_latex_template.pdf
    • https://cdn.shopify.com/s/files/1/0429/5491/5993/files/70256591204.pdf
    • https://cdn.shopify.com/s/files/1/0431/6869/4432/files/xadeja.pdf
    • https://cdn.shopify.com/s/files/1/0432/9416/3109/files/zalalidimexegewudurumepo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6826/8456/files/club_car_ds_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/6454/7741/files/pontiac_engine_codes.pdf
    • https://cdn.shopify.com/s/files/1/0432/7574/7484/files/duvuxewanubutuv.pdf
    • https://cdn.shopify.com/s/files/1/0438/8116/9051/files/68683947165.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000042ff.bin
26782106f2a3e637ccdae19766905cea50b9f896fe68a8bb481fb7a33fa12e35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42FF 5240 bytes
font_01_sfnt_off000054ad.bin
cc139c48b92e821d104d07165d1e6fa635dcb364e53d19caf74cc0436d6be9d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54AD 9908 bytes

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