Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a2062b94360a6a3…

MALICIOUS

PDF

38.0 KB Created: 2020-08-24 23:00:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0214f994a76d35c77a0caf0897749afc SHA-1: 5b9bd7015c0111634f18f214d7256f0379af390c SHA-256: 3a2062b94360a6a389ae86bba22c99c5e14982417d1c0b640de6d92cd067c85d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link farm and a direct link to a known malicious redirector, ttraff.ru, which is disguised as a 'Cytanet tv guide'. This suggests a phishing or social engineering attack. The presence of numerous other links to PDF files hosted on various domains, including many on Shopify, indicates a link farm designed to manipulate search engine results or distribute malicious content. No scripts were extracted, but the primary malicious activity appears to be redirecting users to harmful infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=cytanet+tv+guide
    • http://files.gapinteriorismo.com/uploads/1/3/0/7/130775649/gorug.pdf
    • http://zakurijum.vanemanmusic.com/uploads/1/3/0/8/130873710/836495.pdf
    • http://files.pdkbuffaloniagara.org/uploads/1/3/0/8/130874647/626431.pdf
    • http://files.estatecomputers.net/uploads/1/3/1/8/131857970/7977666.pdf
    • http://files.reikifortheplanet.com/uploads/1/3/0/7/130775109/rirowanol_xeromovu_gobodezuva_fuzejizugibovo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4932/0597/files/artigos_academicos_sobre_meio_ambiente.pdf
    • https://cdn.shopify.com/s/files/1/0431/5856/9120/files/belfast_metro_map.pdf
    • https://cdn.shopify.com/s/files/1/0432/6037/9286/files/kerujajosatekireju.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/23796535597.pdf
    • https://cdn.shopify.com/s/files/1/0446/4757/9811/files/attemperator_in_boiler.pdf
    • https://cdn.shopify.com/s/files/1/0437/3794/0122/files/adobe_photoshop_express_for_windows_8._1.pdf
    • https://cdn.shopify.com/s/files/1/0436/0749/0717/files/apcupsd_shutdown_vspheere.pdf
    • https://cdn.shopify.com/s/files/1/0435/1403/6383/files/88909958245.pdf
    • https://cdn.shopify.com/s/files/1/0434/1687/9271/files/fire_domain_pathfinder.pdf
    • https://cdn.shopify.com/s/files/1/0431/0925/3282/files/66671456943.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7614883084.pdf
    • https://cdn.shopify.com/s/files/1/0431/2793/1046/files/zibemev.pdf
    • https://cdn.shopify.com/s/files/1/0428/5625/1555/files/35783593317.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/pexubisagen.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_off00004e4a.bin
f7fa825575d56d0809560c44e90f183beaf2d45ffd3620e14b44cd4b0ae2894b
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E4A 4756 bytes
font_01_sfnt_off00005e96.bin
1fd650313f66de690bcad8674aacfb3a1daf4a9fb7d2e72e83a1b6f75f767465
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E96 14192 bytes