Malicious PDF — malware analysis report

Static analysis result for SHA-256 af9b6984e2c7b45b…

MALICIOUS

PDF

43.1 KB Created: 2020-08-10 11:17:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80a3cf050f4f5a6a2da15c29a5eb9ad8 SHA-1: 2017d067ebcf9ab29eaa6b5698f6575f19cb31b7 SHA-256: af9b6984e2c7b45b0b95b52b88d3587b807c354315d8186cc61c54a6a87be2e0
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, ttraff.com, disguised as a free PDF merging software offer. This indicates a phishing or redirection attack. The document body and heuristics confirm the presence of numerous external links, many of which point to Shopify domains, likely as part of a link farm to obscure the malicious redirector.

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=logiciel+pour+fusionner+des+pdf+gratuit
    • http://files.imperialphotojkt.com/uploads/1/3/1/0/131070792/mipomebenovemugata.pdf
    • http://files.impartalliance.org/uploads/1/3/1/4/131407625/2be183272a3.pdf
    • http://files.valleytems.org/uploads/1/3/0/7/130776312/favumifu.pdf
    • https://cdn.shopify.com/s/files/1/0440/1332/2398/files/31634100445.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/dijejaduxovur.pdf
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/68843086267.pdf
    • https://cdn.shopify.com/s/files/1/0433/4551/0568/files/jugojokubimadiwunaxozoto.pdf
    • https://cdn.shopify.com/s/files/1/0435/7334/6472/files/carte_de_tous_les_pays_du_monde.pdf
    • https://cdn.shopify.com/s/files/1/0433/8266/9475/files/mercury_60_hp_4_stroke_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0439/1282/2939/files/26273940901.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/79176934935.pdf
    • https://cdn.shopify.com/s/files/1/0441/3492/4440/files/86329416614.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/jobusixewalobejokubalem.pdf
    • https://cdn.shopify.com/s/files/1/0439/6069/6990/files/clep_biology_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/5765/1613/files/catalogo_bticino_mx.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_off000065b0.bin
cb4ea11297af38d9ede05edfb88a034f60cd3e93be0624add3a9cd2b0af58986		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65B0 5264 bytes
font_01_sfnt_off000077b0.bin
3df023030ad3d2734816370acbb63374c0b23dc059310198a2c5c036ea43790e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77B0 12020 bytes

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