Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d8bd971380ae5e0…

MALICIOUS

PDF

41.6 KB Created: 2020-08-19 23:08:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70088babf0c0378d7624cc98ac5869be SHA-1: d01d085afd4efcbe3a99e7e700a1c5df9dec6372 SHA-256: 0d8bd971380ae5e0897533dc9d7e22709572d287566508e95850d200459f9940
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely intended to lead the user to a malicious site. The document also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic. The presence of a 'download button' lure further supports a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=grinch+hands+template
    • http://files.thisweeksbestdeals.com/uploads/1/3/0/8/130814717/puzisetulotuwejori.pdf
    • http://files.revivechiropracticandmassage.com/uploads/1/3/0/8/130814856/2449025.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/6808/7711/files/29317902894.pdf
    • https://cdn.shopify.com/s/files/1/0430/1763/3949/files/27968082098.pdf
    • https://cdn.shopify.com/s/files/1/0428/5644/8156/files/63945919039.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4434/files/28151398107.pdf
    • https://cdn.shopify.com/s/files/1/0447/9490/4725/files/ariston_channel_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0933/files/kubunip.pdf
    • https://cdn.shopify.com/s/files/1/0438/3172/2146/files/75828208297.pdf
    • https://cdn.shopify.com/s/files/1/0429/6772/8281/files/10069531478.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zexula.pdf
    • https://cdn.shopify.com/s/files/1/0431/2596/4957/files/zorolosufegulu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/womudagowuromikapekuzuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/pijakal.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_off00005f08.bin
e927afd769be5b3c82c486a6a66bd2795c71aa857ea44572d56bc1b4329b1432
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F08 5344 bytes
font_01_sfnt_off00007101.bin
1e2183b17a9d278a16878e3f81040318dafcdf055b6d510885068571764459ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x7101 12932 bytes