Malicious PDF — malware analysis report

Static analysis result for SHA-256 73f0babcc02692b7…

MALICIOUS

PDF

39.6 KB Created: 2020-08-14 05:48:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 16f4fc3aeb9a50c71b6f680fa06e96e8 SHA-1: d55e74ca52ba73983c7ec9db9ed652977f29ff4b SHA-256: 73f0babcc02692b7a790c657a2345e8ed2c4eb1b06924c69da3714a72dbcc96c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link disguised as a 'Dyson hot and cold purifier manual' which redirects to a known malicious infrastructure at 'ttraff.cc'. This suggests a phishing or scam attempt to lure users to a malicious site. The presence of numerous other links to PDF files, many hosted on Shopify, indicates a link farm strategy, likely for SEO manipulation or to host further malicious content.

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.cc/wb?keyword=dyson%20hot%20and%20cold%20purifier%20manual
    • http://files.jancancan.com/uploads/1/3/1/4/131406413/sosazidisajawaj-ledosol-vaxodavuv-ziwobedomanefon.pdf
    • http://jatese.riefcanada.com/uploads/1/3/2/6/132695492/5422911.pdf
    • http://lelaguju.kk-blc.com/uploads/1/3/0/8/130874493/859bc609d41168.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/6779/1765/files/argenta_pivotica.pdf
    • https://cdn.shopify.com/s/files/1/0435/3848/1311/files/worm_cyoa_v5.pdf
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/litosewatamezivovi.pdf
    • https://cdn.shopify.com/s/files/1/0429/3158/5180/files/16729949817.pdf
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/dj_khaled_suffering_from_success.pdf
    • https://cdn.shopify.com/s/files/1/0434/8212/0357/files/geometric_design_of_highways_nptel.pdf
    • https://cdn.shopify.com/s/files/1/0440/3573/5717/files/indesign_reduce_export_size.pdf
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/97701963221.pdf
    • https://cdn.shopify.com/s/files/1/0430/4653/5322/files/letubefepetagumefije.pdf
    • https://cdn.shopify.com/s/files/1/0428/2040/3356/files/fofoxevabakituxi.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_off00005a8e.bin
f2853431cd662356bf8ad93322477f4405d3b98ee8c29184447a7eac412ca49d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A8E 5496 bytes
font_01_sfnt_off00006d14.bin
623e49a3315eb85dabe4a82d11c33fd9503c31a4d683833f23f5138fa3017127
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D14 10772 bytes