Malicious PDF — malware analysis report

Static analysis result for SHA-256 349a6e85e08bc0ff…

MALICIOUS

PDF

39.8 KB Created: 2020-08-06 01:06:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d62270ce2dca49ef1c2dba3144a0b79 SHA-1: f49357b37a9a088aaca4b1d59811ddb4a7e5d42d SHA-256: 349a6e85e08bc0ff9c9faff8d365e01d62ce2cdda8a78a7dc82698790036b13e
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains URLs that are part of a link farm, suggesting an attempt to manipulate search engine results or distribute malicious content. The presence of a callback lure heuristic further supports a phishing or scam-related attack pattern.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=adrian+paenza+matematica+para+todos+pdf
    • http://jeketu.sheuniquephotography.com/uploads/1/3/2/6/132696414/mijuzeluruxuruwarapa.pdf
    • http://files.uicbcq.org/uploads/1/3/1/4/131454114/6177993.pdf
    • http://files.lagabriellacoffeeshop.com/uploads/1/3/0/8/130874254/3456499.pdf
    • http://files.mycorporatecounselor.com/uploads/1/3/0/7/130775921/4052286.pdf
    • https://cdn.shopify.com/s/files/1/0432/3062/5947/files/noretijidixul.pdf
    • https://cdn.shopify.com/s/files/1/0436/0817/8845/files/75272689821.pdf
    • https://cdn.shopify.com/s/files/1/0431/4054/6714/files/gugibilixa.pdf
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/foseberelojikazil.pdf
    • https://cdn.shopify.com/s/files/1/0430/5335/1066/files/12461212104.pdf
    • https://cdn.shopify.com/s/files/1/0433/8886/2614/files/xebagirofa.pdf
    • https://cdn.shopify.com/s/files/1/0427/4873/9740/files/wejibegumapugeruner.pdf
    • https://cdn.shopify.com/s/files/1/0448/3258/7936/files/principles_of_molecular_virology_6th_edition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jewaxepolirabosumasedud.pdf
    • https://cdn.shopify.com/s/files/1/0434/5430/0312/files/dojopuwagikubo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2779/9957/files/chief_keef_asap_rocky_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9930/8711/files/capitals_of_different_countries.pdf
    • https://cdn.shopify.com/s/files/1/0440/9013/0584/files/multivariate_analysis_of_variance_manova.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_off00005aa0.bin
f568bb093f626a4f7e0910bfddec1663392a20016d3f3803a932d70199ee07d6
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA0 5308 bytes
font_01_sfnt_off00006ca3.bin
965aa24bcc36216bba1506412f393aa4d3db4a66e9e6dec7f3e6f746232cf0bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA3 11196 bytes