Malicious PDF — malware analysis report

Static analysis result for SHA-256 05fce486ebd06c9c…

MALICIOUS

PDF

43.7 KB Created: 2020-08-09 19:54:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47c53b4f482e9fb9182e624c6a3372dc SHA-1: f74f43aaf6f2574f3765bca20e79551c999b91cb SHA-256: 05fce486ebd06c9c6c0200e27f4c606fc81a75681be77b4077cab2e4127c0296
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a link farm infrastructure designed to redirect users to potentially malicious sites. The primary URL identified, https://ttraff.com/pify?keyword=benefits+of+cloud+computing+in+business+management+pdf, is flagged as a malicious redirector. This suggests the document is part of a phishing or spam campaign aiming to drive traffic to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=benefits+of+cloud+computing+in+business+management+pdf
    • http://files.perkinstherapygroup.com/uploads/1/3/1/0/131070618/welazowimatuluk.pdf
    • http://files.zacksguttering.com.au/uploads/1/3/2/6/132696604/xoluxadako.pdf
    • http://files.pfcmalta.org/uploads/1/3/1/3/131379719/33351293a26ca.pdf
    • http://files.sjsldetroit.org/uploads/1/3/1/3/131379828/74b05bc16717.pdf
    • http://files.nicoleedwardsauthor.com/uploads/1/3/1/6/131637056/bibogagip_vobinitinaju_fejifan_soretifela.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/9957/8773/files/95820215541.pdf
    • https://cdn.shopify.com/s/files/1/0429/7680/5013/files/advanced_javascript_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0430/3382/1347/files/71445839105.pdf
    • https://cdn.shopify.com/s/files/1/0428/1407/9143/files/mofaxijesopavaserigibupu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7916/3285/files/biboj.pdf
    • https://cdn.shopify.com/s/files/1/0433/4800/0927/files/xebufamawud.pdf
    • https://cdn.shopify.com/s/files/1/0434/5364/4966/files/mimanozutekotila.pdf
    • https://cdn.shopify.com/s/files/1/0440/1243/7662/files/83680230634.pdf
    • https://cdn.shopify.com/s/files/1/0431/0017/6544/files/10185777632.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b61.bin
33fbde92371a4331346385c82301e6064356ffb8bab6065532df1b65fbb62108
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B61 5568 bytes
font_01_sfnt_off00007e43.bin
ef905e1f8ae23127fce370e7f2d20f2e37a9ae2a238273cc019d3ab360c54da4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E43 10184 bytes