Malicious PDF — malware analysis report

Static analysis result for SHA-256 11eac984d91dc676…

MALICIOUS

PDF

46.7 KB Created: 2020-08-09 13:52:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e9ab58daa4003442fd0ddbd85301aaa7 SHA-1: cc12e0064ae53698da7f98c3bb1fa413e3f02533 SHA-256: 11eac984d91dc6767bcdd3db79c81977e6105d2a5abb52a9ea721e1812f50eb3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a malicious redirector link, identified as 'https://ttraff.cc/pify?keyword=camera+focus+target+pdf', which is designed to lead users to potentially harmful content. The document also features a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a phishing or malware distribution scheme.

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.cc/pify?keyword=camera+focus+target+pdf
    • http://files.christianaharrell.com/uploads/1/3/0/8/130814169/fufewelovux-najudukedemi-lakiminavasi-jotewawawe.pdf
    • http://files.jessieleethetford.com/uploads/1/3/1/6/131607103/e4505c4d.pdf
    • http://files.thunderrunners.co.uk/uploads/1/3/1/3/131381518/tijajopedizevepud.pdf
    • http://files.gracechurchmolokai.com/uploads/1/3/1/4/131483034/1241208.pdf
    • http://files.jacydraws.com/uploads/1/3/1/4/131453674/bizimojowabixiv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/3504/1702/files/14030981430.pdf
    • https://cdn.shopify.com/s/files/1/0433/9341/7367/files/legoluge.pdf
    • https://cdn.shopify.com/s/files/1/0431/1810/0637/files/10482328401.pdf
    • https://cdn.shopify.com/s/files/1/0428/7250/4483/files/73400332758.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34888362351.pdf
    • https://cdn.shopify.com/s/files/1/0435/3458/1911/files/kenolovu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1223/5159/files/nigepizuvefobegekoxetova.pdf
    • https://cdn.shopify.com/s/files/1/0428/5438/3782/files/voxulu.pdf
    • https://cdn.shopify.com/s/files/1/0430/5905/2706/files/xinatobemejerit.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_off00007822.bin
2cd77ddd0defcbea17586a20b0bee1f6d38669b9c27743f42f7d5ffc920764b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7822 5348 bytes
font_01_sfnt_off00008a37.bin
0a6c3b2e258002838c2def898fe3d30357db801f523c0911626e60e047364aba
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A37 10528 bytes