Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a3040b2610cafd9…

MALICIOUS

PDF

53.4 KB Created: 2020-08-11 19:45:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c05e2831f1fd692284c3fe0b6bf36372 SHA-1: b0b3445287c16bcda136951de6d292785d0301f9 SHA-256: 7a3040b2610cafd9638c8cd8c694fe2f1d953f8613e52c7f65f10c5b3704ef06
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=built+in+function+in+python+pdf'. This URL is designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains this URL and other links, suggesting a lure to external malicious infrastructure. No scripts were extracted, but the presence of the malicious URL and the PDF redirector heuristic strongly indicate a phishing or redirection attack.

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=built+in+function+in+python+pdf
    • http://zibuka.kahunaresearchgroup.org/uploads/1/3/0/8/130814328/bec793d42ad.pdf
    • http://files.rejoicewithin.com/uploads/1/3/1/4/131406885/764254.pdf
    • http://files.centerstageplattsburgh.com/uploads/1/3/1/0/131070602/gekigelogebexumobora.pdf
    • http://files.tnecmn.com/uploads/1/3/1/0/131070539/2937140.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/90256384640.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tugogesobiwem.pdf
    • https://cdn.shopify.com/s/files/1/0429/3220/7782/files/income_tax_return_acknowledgement_form_2020_18.pdf
    • https://cdn.shopify.com/s/files/1/0440/2449/6286/files/setigujulorofavajalinigo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1510/2876/files/blastulation_in_frog.pdf
    • https://cdn.shopify.com/s/files/1/0432/1158/7752/files/nimugewivejevopuno.pdf
    • https://cdn.shopify.com/s/files/1/0448/4051/7792/files/chalean_extreme_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0429/3096/2588/files/popimibasosazuvo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1964/0738/files/70855938043.pdf
    • https://cdn.shopify.com/s/files/1/0434/4755/0119/files/tecumseh_carb_adjustments.pdf
    • https://cdn.shopify.com/s/files/1/0431/8976/4245/files/labulufumopefibowesapubeg.pdf
    • https://cdn.shopify.com/s/files/1/0429/2280/3366/files/67799427212.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007dd3.bin
ee03a9dc6b212ad268964f3954e5593f8affc8e8bdfd3ab89b6e9da46f284399
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD3 4672 bytes
font_01_sfnt_off00008db0.bin
5e4b8fc4f5313d8a924e3ef7105c62071c1e0d1faaf60ac2ec3f3b355188a6d3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB0 14160 bytes
font_02_sfnt_off0000bac7.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0xBAC7 4324 bytes