Malicious PDF — malware analysis report

Static analysis result for SHA-256 322e7dd353876a57…

MALICIOUS

PDF

41.7 KB Created: 2020-08-07 04:46:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67c88193841b50da11d08650e434d1f3 SHA-1: 72334242c80d9678d5bdf3006e47e0a0d84d2be6 SHA-256: 322e7dd353876a57588e7e53a80ce4c9d515710c6dbf0434462e036c39c0b6fe
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to domains associated with link farms and redirectors. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is presented within the document body as a "CCNA Routing and Switching" guide. This suggests a social engineering attempt to direct users to malicious infrastructure. The presence of numerous external PDF links, many hosted on Shopify, further indicates a link farm strategy, likely to improve search engine ranking for malicious content or to obscure the ultimate destination.

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.cc/pify?keyword=pdf+ccna+routing+and+switching+200+125+official+cert+guide+library
    • http://bujuzuf.thedetailors.com/uploads/1/3/0/9/130969754/lovuwa.pdf
    • http://files.linemantrainer.com/uploads/1/3/1/3/131381612/wojitu_kazubapi_ledokakikimol.pdf
    • http://files.skipscards.com/uploads/1/3/0/8/130874050/f0a113.pdf
    • https://cdn.shopify.com/s/files/1/0431/8255/5300/files/frost_mage_best_in_slot.pdf
    • https://cdn.shopify.com/s/files/1/0428/9894/8255/files/felojunog.pdf
    • https://cdn.shopify.com/s/files/1/0433/8103/1061/files/16733481263.pdf
    • https://cdn.shopify.com/s/files/1/0448/2852/4701/files/pdf_to_word_free_from_nitro.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53522836856.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41697505155.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/75576765324.pdf
    • https://cdn.shopify.com/s/files/1/0438/4748/3552/files/bolly_songs_2016.pdf
    • https://cdn.shopify.com/s/files/1/0431/2681/6932/files/96924929036.pdf
    • https://cdn.shopify.com/s/files/1/0431/7233/1682/files/definicion_de_antivalores.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_off00005cf1.bin
d1e4fef20d576f39f9fb38be16625e84e2077f8cc0ae5a816a334c1163545ffc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF1 6068 bytes
font_01_sfnt_off000071ae.bin
8b565b84b15064c397db99963489a458edb7a0cb5075eccfb3bc11eb2622ee78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71AE 11040 bytes

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