Malicious PDF — malware analysis report

Static analysis result for SHA-256 76f47088bde045f9…

MALICIOUS

PDF

44.3 KB Created: 2020-08-01 11:40:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac8c24a6ba6823dce1924a67f73aa62d SHA-1: ac7dec26b054cd1c4d78561712f37b5b0ad6dfde SHA-256: 76f47088bde045f9b3af5821d1700c566c74781c1460ff1e145db04a7154bd0c
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 redirector service designed to obscure the final destination. The primary malicious link identified is https://ttraff.com/pify?keyword=body+beast+nutrition+guide+pdf, which likely leads to a phishing or malware distribution site. The document body text, though heavily obfuscated, also contains this URL, suggesting an attempt to disguise its malicious nature.

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=body+beast+nutrition+guide+pdf
    • http://files.tiarrawiggs.com/uploads/1/3/1/8/131857305/wuroj-vuditipamitew.pdf
    • http://files.lotusdirect.co.uk/uploads/1/3/1/3/131398222/6944350.pdf
    • http://files.maciejbielawski.com/uploads/1/3/2/7/132740350/laretuv_medag.pdf
    • http://files.studio11sfe.com/uploads/1/3/2/3/132303068/rerosiz.pdf
    • http://files.nicoleandersonconsulting.com/uploads/1/3/1/4/131437330/fagivese-nuxivizelava-wajetoposuluz-dolosexi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/8855/2870/files/woxaputugurilejujukibunar.pdf
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/15914109045.pdf
    • https://cdn.shopify.com/s/files/1/0433/5868/3291/files/tadarufejud.pdf
    • https://cdn.shopify.com/s/files/1/0431/4526/5312/files/dinepobifodefesudodofud.pdf
    • https://cdn.shopify.com/s/files/1/0429/9256/6435/files/87525614063.pdf
    • https://cdn.shopify.com/s/files/1/0432/0601/7186/files/24946650011.pdf
    • https://cdn.shopify.com/s/files/1/0435/4949/1359/files/sajezomovuguxipululapave.pdf
    • https://cdn.shopify.com/s/files/1/0431/2095/1450/files/41208318043.pdf
    • https://cdn.shopify.com/s/files/1/0432/8092/4837/files/jipikibizixurigepesa.pdf
    • https://cdn.shopify.com/s/files/1/0440/6339/1894/files/96899216474.pdf
    • https://cdn.shopify.com/s/files/1/0430/4545/3985/files/32359956555.pdf
    • https://cdn.shopify.com/s/files/1/0437/2663/5157/files/zaxiteperujunebisip.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_off00006e3c.bin
14a4f23cf8027529a003058511f48cd55a898d456d1203510fbff79a8a86e24b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3C 5468 bytes
font_01_sfnt_off000080ea.bin
7c544205ce709a1a36b2815b1df5758a2cc35be943683cb49c0eed0a7862b631		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80EA 10420 bytes

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