Malicious PDF — malware analysis report

Static analysis result for SHA-256 c14f68623e9e1d6d…

MALICIOUS

PDF

80.2 KB Created: 2020-07-30 01:55:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a407191fc12089dccb12f9157290f21a SHA-1: c68af11761655d3e26fe7c5039ba5ee88cbad5d0 SHA-256: c14f68623e9e1d6ddba22a7b108a193b99271c087740b3cb9c087f232480dc68
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a malicious redirector link disguised as a search result for a specific PDF, aiming to lead the user to malicious infrastructure. Additionally, the document employs a callback phishing lure, prompting users to contact a number for billing or security issues. The presence of numerous external PDF links suggests a link farm strategy to improve search engine ranking for malicious content. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=enter+the+gungeon+ammonomicon+pdf
    • http://files.echoescollective.com/uploads/1/3/1/4/131437531/9732582.pdf
    • http://files.turningleaftherapyservices.com/uploads/1/3/0/7/130739457/92c2f.pdf
    • http://files.mduvallportfolio.com/uploads/1/3/2/6/132681415/6612445.pdf
    • http://files.maramann.com/uploads/1/3/1/3/131380730/gumifelirafirirulav.pdf
    • https://cdn.shopify.com/s/files/1/0441/3584/1944/files/64488109149.pdf
    • https://cdn.shopify.com/s/files/1/0429/9423/7593/files/29918421177.pdf
    • https://cdn.shopify.com/s/files/1/0431/4690/3709/files/55190427483.pdf
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/damixiduleritim.pdf
    • https://cdn.shopify.com/s/files/1/0435/4582/1338/files/pukunofumapavudikojor.pdf
    • https://cdn.shopify.com/s/files/1/0434/7052/0470/files/biremapolaxuwowidiganik.pdf
    • https://cdn.shopify.com/s/files/1/0428/6929/3223/files/76402742493.pdf
    • https://cdn.shopify.com/s/files/1/0432/8282/5376/files/88307115638.pdf
    • https://cdn.shopify.com/s/files/1/0431/9461/3924/files/sogitibinajateto.pdf
    • https://cdn.shopify.com/s/files/1/0430/6790/0061/files/66388379617.pdf
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/7505959924.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/30395724150.pdf
    • https://cdn.shopify.com/s/files/1/0431/7331/4715/files/6318970842.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_off0000fb9e.bin
8f1b23bb2c9b807a0cd1e357ba49a4bfa3f9da89b3aa3ffbc5383ab6108b7eb1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB9E 5200 bytes
font_01_sfnt_off00010d1d.bin
0acccade196bc768df32598c8c684705ca91a4240a5fcd68c546a468ebca58ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x10D1D 11728 bytes