Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff1c8305dff0eb94…

MALICIOUS

PDF

48.2 KB Created: 2020-08-11 23:22:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 33794d23e35c5ff7d9ecbfee5c8bccac SHA-1: dd93619e3b1318ff9cca2ee5c017f4933cd3a900 SHA-256: ff1c8305dff0eb9460cb3d31e43a24e92f2330d4c104831ca9d3e14e4debf3b2
152 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link, identified as 'https://ttraff.cc/pify?keyword=marrakech+medina+map+pdf', which is designed to lure users to malicious infrastructure. The document also hosts a large number of external PDF links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic. No scripts were extracted, but the presence of the malicious redirector and the link farm strongly indicate a phishing or redirection attack.

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/pify?keyword=marrakech+medina+map+pdf
    • http://files.glenfrank.com/uploads/1/3/1/3/131379306/1984371.pdf
    • http://darizuv.seedstoharvest.ca/uploads/1/3/0/7/130739140/2714029.pdf
    • http://files.stnectariosgeorgegoc.com/uploads/1/3/0/8/130814594/tewet-difukezos-guboko-wejaxepitot.pdf
    • http://files.kylespestsolution.com/uploads/1/3/1/6/131636655/4254434.pdf
    • https://cdn.shopify.com/s/files/1/0435/8553/6161/files/basic_english_usage_edicion_espaola.pdf
    • https://cdn.shopify.com/s/files/1/0433/1054/7099/files/31952756648.pdf
    • https://cdn.shopify.com/s/files/1/0431/6879/2732/files/ontario_grade_12_english_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0427/8393/2582/files/muwexixamoxatudel.pdf
    • https://cdn.shopify.com/s/files/1/0431/3939/9842/files/34789057193.pdf
    • https://cdn.shopify.com/s/files/1/0439/1773/8152/files/bokakobu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1175/1588/files/notatozawezoxedepunone.pdf
    • https://cdn.shopify.com/s/files/1/0430/4984/4890/files/watchmen_comic_descargar.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tapowizilefaj.pdf
    • https://cdn.shopify.com/s/files/1/0434/3883/3816/files/cours_android_studio_openclassroom.pdf
    • https://cdn.shopify.com/s/files/1/0435/9861/0589/files/popunegemajomamifu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5293/3018/files/47783555466.pdf
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/56108121703.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_off00007f49.bin
4d78c8988f84bb2e93b20f115983592b1697f7d63e275623718368a8a688f07d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F49 5252 bytes
font_01_sfnt_off00009108.bin
f60b03f2c79d285f394949893d3985ea4166b8971423d1d5be2e5168f14d830f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9108 10308 bytes

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