Malicious PDF — malware analysis report

Static analysis result for SHA-256 2da82abb2828cc85…

MALICIOUS

PDF

54.6 KB Created: 2020-08-03 03:18:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fa8b22b27b25418f7d15a04f4c59475 SHA-1: 479b54eb6bea5c41e25c8b4cce6b131c74fa737d SHA-256: 2da82abb2828cc85cc370a883963548966163d6d3f5984e5c4e11f7b7a366139
120 Risk Score

Malware Insights

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

The PDF was identified as malicious due to a critical heuristic firing for a PDF link redirecting to known malicious infrastructure. Additionally, another critical heuristic detected a large number of embedded external PDF links, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is ttraff.ru, which is likely used to redirect users to further malicious content.

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=missing%2528+2012+tv+series%2529
    • http://files.matthiashungerbuehler.com/uploads/1/3/0/7/130775712/dekeforolo_xijafesedige.pdf
    • http://files.okanagan.com/uploads/1/3/1/4/131438036/94a3b2fef7a1.pdf
    • http://files.precisiondental-nj.com/uploads/1/3/1/8/131856919/nuvufetofeji.pdf
    • http://files.elevationshairdesign.com/uploads/1/3/0/7/130739571/tosaluxiviz.pdf
    • http://files.designinginmydreams.com/uploads/1/3/0/7/130739520/abf1d27f14.pdf
    • https://cdn.shopify.com/s/files/1/0434/6360/6429/files/chip_on_your_shoulder.pdf
    • https://cdn.shopify.com/s/files/1/0434/3876/8294/files/97463143916.pdf
    • https://cdn.shopify.com/s/files/1/0427/9068/2783/files/pemojeja.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2088/files/burorumazujeverufoliwe.pdf
    • https://cdn.shopify.com/s/files/1/0438/7084/7131/files/kafuma.pdf
    • https://cdn.shopify.com/s/files/1/0429/1896/9507/files/gojexudelipo.pdf
    • https://cdn.shopify.com/s/files/1/0428/4999/2870/files/ten_thousandths_place.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90554838216.pdf
    • https://cdn.shopify.com/s/files/1/0431/2029/6090/files/54359159644.pdf
    • https://cdn.shopify.com/s/files/1/0431/7541/1872/files/71210539225.pdf
    • https://cdn.shopify.com/s/files/1/0434/2788/9302/files/47045744825.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_off00008bde.bin
34956ffa2e3f2f5bfea4fe9e1f52e1ca323da77acd12c2256a5eecb1a841cd9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BDE 4836 bytes
font_01_sfnt_off00009c78.bin
a783a9c25837395ee9ea6da568df925fbb32efbba3ee671c00d676d8880fd890		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C78 10112 bytes
font_02_sfnt_off0000bf06.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF06 4324 bytes

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