Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1a3bf96dda0c2af…

MALICIOUS

PDF

40.0 KB Created: 2020-08-14 07:32:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acecf14c3271786f95c978f5fa97e738 SHA-1: 3a0ac53747600d0e878164dd538dc05159afc38a SHA-256: b1a3bf96dda0c2afae1906d34d4ce9413b4498d138626318edaba57821c00dd6
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The embedded links, including one to 'ttraff.com', suggest an attempt to lure users to potentially harmful sites. While no scripts were extracted, the structure and heuristics strongly indicate a phishing or malware distribution attempt.

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.
  • 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.
  • 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=nordic+ware+half+sheet+pan+dimensions
    • http://files.uofaasce.com/uploads/1/3/2/6/132682040/kogefojuzonera_dopituw.pdf
    • http://files.rocwrites.com/uploads/1/3/1/3/131379615/nolojefavutifanoxi.pdf
    • http://files.mediocreatbest.net/uploads/1/3/0/7/130739316/limokegev.pdf
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/jitinofumopozef.pdf
    • https://cdn.shopify.com/s/files/1/0435/1574/0312/files/42184001676.pdf
    • https://cdn.shopify.com/s/files/1/0437/6123/8168/files/27420138184.pdf
    • https://cdn.shopify.com/s/files/1/0431/4916/4705/files/resistance_chauffante.pdf
    • https://cdn.shopify.com/s/files/1/0428/8145/0147/files/xokaridodofagawelib.pdf
    • https://cdn.shopify.com/s/files/1/0428/8525/1235/files/97339316487.pdf
    • https://cdn.shopify.com/s/files/1/0431/1344/7584/files/gefopulepeledu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5109/6984/files/70316302215.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7218161301.pdf
    • https://cdn.shopify.com/s/files/1/0431/0319/1193/files/33949497355.pdf
    • https://cdn.shopify.com/s/files/1/0430/6393/5129/files/zisis.pdf
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/arithmetic_mathematics.pdf
    • https://cdn.shopify.com/s/files/1/0434/8903/4402/files/houses_in_vedic_astrology.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_off00005c41.bin
2bf77d3ebbd9e8221d1bdc0968ae533fd7d3a50669faad3e1c6537c4fd6a11cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C41 5456 bytes
font_01_sfnt_off00006eb8.bin
4eb5d89a30f1e1c187f50259e404a25a50db8f1d9de353c0e9b2722101cc7c03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB8 10580 bytes

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