Malicious PDF — malware analysis report

Static analysis result for SHA-256 c86b48a72979de0a…

MALICIOUS

PDF

44.2 KB Created: 2020-08-24 09:40:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81987601da3e550d6bc471f0f41fc77a SHA-1: d1eaa8111cada9ba9d3bf15280ab3b270977c072 SHA-256: c86b48a72979de0a81dfa6e5fed93ad509a49851dd79874def0f8eb3d2ab859e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one specifically pointing to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=baal+veer+1+3gp'. This suggests the document is designed to lure users into clicking these links, potentially leading to phishing sites or malware downloads. The presence of numerous other PDF links hosted on platforms like Shopify further indicates a link farm strategy to obscure the malicious intent.

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.ru/pify?keyword=baal+veer+1+3gp
    • http://files.connectatc.org/uploads/1/3/1/1/131163533/xonunurumateminavi.pdf
    • http://files.walkbikebcd.com/uploads/1/3/0/7/130775563/tukapajazoridemowo.pdf
    • https://cdn.shopify.com/s/files/1/0439/2845/3288/files/78574212640.pdf
    • https://cdn.shopify.com/s/files/1/0437/3594/1274/files/puxutasefinodivesivubet.pdf
    • https://cdn.shopify.com/s/files/1/0433/2643/9582/files/penatalaksanaan_angina_pectoris.pdf
    • https://cdn.shopify.com/s/files/1/0429/5471/9395/files/30401568474.pdf
    • https://cdn.shopify.com/s/files/1/0435/7206/8520/files/construction_company_brochure_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/7754/1787/files/sixaxis_controller_pc.pdf
    • https://cdn.shopify.com/s/files/1/0435/4441/2309/files/asia_blank_map_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/tunixi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9816/8743/files/51487362817.pdf
    • https://cdn.shopify.com/s/files/1/0437/2906/0001/files/88270975766.pdf
    • https://cdn.shopify.com/s/files/1/0436/5287/4390/files/13066659603.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055c1.bin
abe291ac9da28591f0bccb4507d34f05f196ea250a6fc14a557e4aacd64ccb58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55C1 4580 bytes
font_01_sfnt_off00006566.bin
6e445f4ec4cceec63108fb5ba4530f30e903811f03cd3190688b540098694a24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6566 10308 bytes
font_02_sfnt_off000088b5.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88B5 4324 bytes
font_03_sfnt_off000096b7.bin
37e81cd8bd98f7e838e47f4f79a11fabb23bc839014a739095ffe0f123f167f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96B7 2916 bytes

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