Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d0f6dc35b8210ca…

MALICIOUS

PDF

38.0 KB Created: 2020-08-06 22:50:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82bc40034e22744daeadf5ff81280afa SHA-1: 51ee9681eff35138fb17784e92157747370cf82f SHA-256: 1d0f6dc35b8210cafa1466f3f08702ee3683317ce1cdd4eaa23c3e34c3d2f563
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=cost+and+management+accounting+n6+questions+and+answers+pdf'. This URL is likely used to redirect users to a malicious site. The document also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning attempt to improve search engine ranking for the malicious content. The document body, though heavily obfuscated, contains the target URL and other benign-looking PDF links.

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=cost+and+management+accounting+n6+questions+and+answers+pdf
    • http://files.briancarnold.com/uploads/1/3/1/6/131606526/9fbbfe320.pdf
    • http://files.ponyupponyclub.com/uploads/1/3/1/4/131406068/zegimoxifodup-fezimemik.pdf
    • http://files.andydoveyphotography.com/uploads/1/3/2/3/132302859/64cbeedb7f.pdf
    • https://cdn.shopify.com/s/files/1/0436/9884/7896/files/37510910296.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/majil.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/7012/files/12649901586.pdf
    • https://cdn.shopify.com/s/files/1/0430/8520/1561/files/34651824326.pdf
    • https://cdn.shopify.com/s/files/1/0431/8016/3232/files/27228852107.pdf
    • https://cdn.shopify.com/s/files/1/0434/8156/3286/files/33228279578.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/vedolorepuxazuxezajadiz.pdf
    • https://cdn.shopify.com/s/files/1/0435/4323/2661/files/91430958297.pdf
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/women_s_protection_act_against_domestic_violence.pdf
    • https://cdn.shopify.com/s/files/1/0429/6779/3820/files/holy_bible_in_arabic.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_off00005340.bin
be853a434e9cae9f6ee3542ebbf6ccafeca3788a44bd00125089f0e7178d2107		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5340 5720 bytes
font_01_sfnt_off000066a9.bin
845c57f7f827c548090dbd321467539db534cd1721d3561bd1b85037d3379d84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66A9 10628 bytes

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