Malicious PDF — malware analysis report

Static analysis result for SHA-256 07f168eea01e97cb…

MALICIOUS

PDF

59.0 KB Created: 2020-08-11 15:37:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 638de63bcb7857c95d9e914965c24d2f SHA-1: eddf9d1d37cf439da487a5212258bbc8213d7ada SHA-256: 07f168eea01e97cb654b0e7152b1c6b576ad146951f8c04d6048ee3617155f4a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or SEO manipulation tactic. One prominent link, 'https://ttraff.ru/pify?keyword=peter+lynch+beating+the+street+free+pdf', is identified as a malicious redirector. This indicates the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted from this sample.

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.ru/pify?keyword=peter+lynch+beating+the+street+free+pdf
    • http://geraredi.trainingmadefair.com/uploads/1/3/0/8/130815017/katagifez.pdf
    • http://files.drmeganparis.com/uploads/1/3/0/7/130739029/343be577462b7.pdf
    • http://files.103air.com/uploads/1/3/1/4/131437848/kisifeza.pdf
    • http://files.alorenzdesign.com/uploads/1/3/1/6/131637477/sufizedeverigag-vorame-winowegasepidex-pusum.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/3494/3389/files/79000645240.pdf
    • https://cdn.shopify.com/s/files/1/0437/2388/2664/files/veradigoragilovotori.pdf
    • https://cdn.shopify.com/s/files/1/0433/5514/4347/files/83553660251.pdf
    • https://cdn.shopify.com/s/files/1/0431/5942/1092/files/jejok.pdf
    • https://cdn.shopify.com/s/files/1/0440/8092/2789/files/vizio_codes_for_direct_tv.pdf
    • https://cdn.shopify.com/s/files/1/0432/6827/6384/files/bamboo_cth-_670.pdf
    • https://cdn.shopify.com/s/files/1/0431/8897/7813/files/87685005595.pdf
    • https://cdn.shopify.com/s/files/1/0431/1977/1799/files/82002664982.pdf
    • https://cdn.shopify.com/s/files/1/0427/5198/3783/files/29097267373.pdf
    • https://cdn.shopify.com/s/files/1/0427/7701/8524/files/puxomeruvut.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_off0000a7ed.bin
78117ff73e39298862b398549643738e27c6c55c8a31c1d33f6fd969bbb0cdff
pdf-font-stream PDF embedded font (sfnt) at offset 0xA7ED 5660 bytes
font_01_sfnt_off0000bb20.bin
f779818594cecc22c5191bae8f30639d95d02804e5f3ee341677dcabe75dceb6
pdf-font-stream PDF embedded font (sfnt) at offset 0xBB20 10416 bytes