Malicious PDF — malware analysis report

Static analysis result for SHA-256 d844930020c8b192…

MALICIOUS

PDF

49.1 KB Created: 2020-08-12 08:47:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83d82bd263edbd75f9e8bb9f33da639f SHA-1: 630018615f27898a4836014bb7f312013c7c7301 SHA-256: d844930020c8b1926df907136d84f4196c3ce2cc85e2ea7a8c86517fc0ec4493
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a malicious redirector pointing to 'ttraff.com'. This suggests a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the attack vector. The presence of numerous external links, many hosted on Shopify, indicates a link farm strategy 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.com/pify?keyword=introduction+to+calculus+and+analysis+volume+1+pdf
    • http://files.mackaydoula.net/uploads/1/3/0/8/130814631/2946ad2c9d1d.pdf
    • http://files.drkatieskitchen.com/uploads/1/3/1/3/131381799/dc8babd23.pdf
    • http://japamaluv.astaseattle.org/uploads/1/3/1/6/131606354/nuvomusemudedun_vulegopa_lefug.pdf
    • http://zujigo.whitcombeducates.net/uploads/1/3/0/7/130776330/739eef0.pdf
    • https://cdn.shopify.com/s/files/1/0431/9812/0094/files/88156628227.pdf
    • https://cdn.shopify.com/s/files/1/0440/5955/8053/files/40010334352.pdf
    • https://cdn.shopify.com/s/files/1/0433/9692/3555/files/debirevigokebasinipo.pdf
    • https://cdn.shopify.com/s/files/1/0437/9872/4769/files/95667880011.pdf
    • https://cdn.shopify.com/s/files/1/0438/7497/5912/files/dejojolavemazifexivu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8091/7926/files/region_based_segmentation_in_digital_image_processing.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/54640011977.pdf
    • https://cdn.shopify.com/s/files/1/0430/3260/8921/files/54985768014.pdf
    • https://cdn.shopify.com/s/files/1/0430/6200/1821/files/novuribav.pdf
    • https://cdn.shopify.com/s/files/1/0431/1682/2692/files/modirejuwipobowubapaf.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007572.bin
598ac94962dc3c252e1e3f20d1e94a87289e4eb24ec5b7876184571a87c597a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7572 5332 bytes
font_01_sfnt_off00008786.bin
abfb8c0a1424840e01444142ee5137547d0e92bd819406f8550227fa3ab1869a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8786 9880 bytes
font_02_sfnt_off0000a953.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA953 4324 bytes

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