Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d9cab81689c1a39…

MALICIOUS

PDF

39.8 KB Created: 2020-08-13 23:18:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 816ffeeb160c95dc58e807bdb1179fd6 SHA-1: 7e18d4d4e8ca8dd9729f8eea8fabae996301b463 SHA-256: 3d9cab81689c1a39b14127cde2a2fa44803d5d6b6f87c6a9bdeff997c63ff59e
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=gphc+fitness+to+practice+report'. The document body, though obfuscated, contains text related to a 'Gphc fitness to practice report' and includes numerous embedded URLs, many hosted on shopify.com, suggesting a link farm or redirection strategy. The primary malicious URL is the most critical IOC.

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=gphc+fitness+to+practice+report
    • http://files.coachskeen.org/uploads/1/3/0/7/130776518/lenepopimobi-binetetak-finukuw.pdf
    • http://files.waywardweaves.co.uk/uploads/1/3/0/9/130969160/4d80d2f9ff9.pdf
    • http://files.ohioyarn.com/uploads/1/3/2/6/132681938/dofexeduwo.pdf
    • https://cdn.shopify.com/s/files/1/0453/8662/9288/files/appareil_gnital_fminin.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/80804151078.pdf
    • https://cdn.shopify.com/s/files/1/0434/6901/3158/files/19413398283.pdf
    • https://cdn.shopify.com/s/files/1/0435/2950/2874/files/31632451097.pdf
    • https://cdn.shopify.com/s/files/1/0429/8794/6143/files/classical_mechanics_taylor_2005.pdf
    • https://cdn.shopify.com/s/files/1/0438/4597/6224/files/14213331650.pdf
    • https://cdn.shopify.com/s/files/1/0434/2215/4908/files/76785495461.pdf
    • https://cdn.shopify.com/s/files/1/0428/5104/1447/files/kebelukokezugukefogasa.pdf
    • https://cdn.shopify.com/s/files/1/0438/6881/5528/files/beamng_drive_demo.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_off00005ad1.bin
6460881a95fc8aa1356a883f6490d000b4af67e748be7b3033d723022fdcabdd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD1 5100 bytes
font_01_sfnt_off00006c26.bin
2a6a5ce7512273da0a31b39f16b5538c3e22061542b5e3ab7212eac82fd05ef6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C26 12036 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.