Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1e57bdf2babb4c0…

MALICIOUS

PDF

86.2 KB Created: 2020-08-10 15:08:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d42d1ee1a671f6d4e689675fbb93bf4 SHA-1: bd494526fa677840ab0f820b4f900b9e430f6513 SHA-256: f1e57bdf2babb4c0fb06fa90c4d8322d3c17d14f68e2a1df3b607285b140e788
120 Risk Score

Malware Insights

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

The PDF contains numerous links, with one specifically pointing to a known malicious redirector at 'ttraff.com'. This suggests a phishing or scam attempt, likely to direct users to malicious content or further phishing pages. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=amylase+production+by+fungi+pdf', reinforcing the malicious redirector finding. The presence of many external links also indicates a link farm or SEO poisoning tactic.

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.com/pify?keyword=amylase+production+by+fungi+pdf
    • http://modefi.providencefriends.com/uploads/1/3/1/1/131163599/kovimomezifodi.pdf
    • http://files.carolbelcherlmt.com/uploads/1/3/2/6/132695339/5409540.pdf
    • http://files.counselingwithcatherine.com/uploads/1/3/0/7/130776483/84d4cd44e.pdf
    • http://files.cvintegrativetherapies.com/uploads/1/3/2/6/132681488/suxur.pdf
    • http://files.talmygroup.com/uploads/1/3/2/6/132695530/8295226.pdf
    • https://cdn.shopify.com/s/files/1/0431/0522/2822/files/tolegivemulo.pdf
    • https://cdn.shopify.com/s/files/1/0428/8669/3023/files/zimufisopajiwixopob.pdf
    • https://cdn.shopify.com/s/files/1/0434/6865/2697/files/r_summary_statistics.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/19983023963.pdf
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/76809389521.pdf
    • https://cdn.shopify.com/s/files/1/0431/6925/1487/files/doxurujisitareniwizatix.pdf
    • https://cdn.shopify.com/s/files/1/0431/0564/8807/files/wudaxeporun.pdf
    • https://cdn.shopify.com/s/files/1/0438/0858/7936/files/embryology_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/3550/0439/files/remonusipuvabinuwor.pdf
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/aprender_italiano_a1.pdf
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/refezefi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7880/2846/files/cancer_de_prostata_imss.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/critical_thinking_in_nursing.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_off000114f8.bin
1fe78c9fb693d456a22a87d853cf7ba597ce6672c28aa81ed4566189cd62d6fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x114F8 5708 bytes
font_01_sfnt_off0001284a.bin
67766c4d382753c63e5b333b4884fa0ff9de4384bf3d2b34e0670680f0c4442e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1284A 10292 bytes

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