Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb530f31f825ff09…

MALICIOUS

PDF

44.2 KB Created: 2020-08-26 20:41:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f2856828fb4596702f09450b76eec905 SHA-1: 2f5b9463518a95697b1fa41298de27458aed64fd SHA-256: eb530f31f825ff09d7d77b646143b212b1532c490df247027a3f26a1defdd0dc
152 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous embedded URLs, including a critical redirector link to 'ttraff.com'. This suggests a phishing or malware distribution attempt. The document body, though heavily obfuscated, also contains the same redirector URL. The presence of multiple Shopify-hosted PDF links, some confirmed benign and others unknown, indicates an attempt to blend malicious content with seemingly legitimate resources. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=saf+holland+parts
    • http://xakide.simpsonchorus.com/uploads/1/3/2/6/132696067/2978f697de79.pdf
    • http://tilali.dominicmartinez.com/uploads/1/3/1/3/131383678/bujukegik_ruvinimojumapa_lifed.pdf
    • http://files.princetonclubsummercamp.com/uploads/1/3/1/3/131379540/3657729.pdf
    • https://portal.saf-axles.comAny
    • https://cdn.shopify.com/s/files/1/0435/6970/9217/files/76140195505.pdf
    • https://cdn.shopify.com/s/files/1/0431/1308/7142/files/livunagoj.pdf
    • https://cdn.shopify.com/s/files/1/0436/9724/2262/files/blagues_de_tonton.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/pegiriwekatagopapalopolib.pdf
    • https://cdn.shopify.com/s/files/1/0440/8039/8486/files/bexaj.pdf
    • https://cdn.shopify.com/s/files/1/0438/9548/8680/files/appium_1._8._0_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0432/4763/2548/files/zopif.pdf
    • https://cdn.shopify.com/s/files/1/0431/6640/0673/files/linear_demand_function.pdf
    • https://cdn.shopify.com/s/files/1/0428/2767/7852/files/gomebagewelog.pdf
    • https://cdn.shopify.com/s/files/1/0439/1557/5464/files/diratawefigivupesimidewoz.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_off00006370.bin
0ed514468cde28a695657000fd851e42b170ea8d97543f916618b1a9f9bc48be
pdf-font-stream PDF embedded font (sfnt) at offset 0x6370 5232 bytes
font_01_sfnt_off00007529.bin
6b107fb611e9d58237d8123372f7e019f3418068834bbcc7a31714b46bb80140
pdf-font-stream PDF embedded font (sfnt) at offset 0x7529 15364 bytes