Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f25cc9190e165f6…

MALICIOUS

PDF

43.6 KB Created: 2020-08-25 04:57:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c02debf43774e393dfb92b11bb2ebfba SHA-1: 5cd9482c3f979789cbb248ebd096a721e6d744e8 SHA-256: 2f25cc9190e165f61a93a22b1ee8cf3b3cff1124e41ee826fd0f063970cb1fa7
150 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is disguised as a platform ticket online service. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

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=platform+ticket+online+hyderabad
    • http://files.westwoodrotarynj.org/uploads/1/3/1/6/131606875/faca3.pdf
    • http://files.cbdcrush.shop/uploads/1/3/2/7/132710797/jenut-letinoge-sovumutamunogez.pdf
    • http://jigude.jerryandwen.com/uploads/1/3/1/0/131069991/9697319.pdf
    • http://files.nrityayogsutra.com/uploads/1/3/2/6/132682934/lirakozirofun.pdf
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/jixito.pdf
    • https://cdn.shopify.com/s/files/1/0432/8023/6702/files/dod_form_2861.pdf
    • https://cdn.shopify.com/s/files/1/0436/6827/5353/files/86259166706.pdf
    • https://cdn.shopify.com/s/files/1/0435/8966/4926/files/sogituretawusirol.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/darusefozazawab.pdf
    • https://cdn.shopify.com/s/files/1/0432/0352/6820/files/sosivapuma.pdf
    • https://cdn.shopify.com/s/files/1/0440/5254/5701/files/86463150312.pdf
    • https://cdn.shopify.com/s/files/1/0433/3345/1926/files/star_wars_the_force_awakens_movie_script.pdf
    • https://cdn.shopify.com/s/files/1/0431/1393/9110/files/27218380492.pdf
    • https://cdn.shopify.com/s/files/1/0430/7792/7072/files/bajipirixorafanopama.pdf
    • https://cdn.shopify.com/s/files/1/0430/8421/8532/files/modej.pdf
    • https://cdn.shopify.com/s/files/1/0431/9238/5700/files/wepexitorosif.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_off00006b5e.bin
c8378b55aaddc14c6f27f9742b04eb6bad0d2d26711656f167650f6e1d5bb0cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5E 5388 bytes
font_01_sfnt_off00007d85.bin
4283504e010bc615da1dd20dab17c2b780b40fd6534d74c1554c8ff32da1dffb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D85 10780 bytes

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