Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbe65d09f45edd73…

MALICIOUS

PDF

41.9 KB Created: 2020-08-22 18:01:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acd4734174a9456f288111acc35f5573 SHA-1: 48bd171f3a0705c9ddddd459f470a2bd94d93b41 SHA-256: fbe65d09f45edd73fa6e351a7493a1cabad51268ba7aa0bea1d4c98fd3b28a37
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=best+sniper+games+for+pc+free'. This URL is presented within the document body, disguised as a link to download sniper games. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. 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.cc/pify?keyword=best+sniper+games+for+pc+free
    • http://jukej.harmonioushoos.com/uploads/1/3/2/6/132681513/7982817.pdf
    • http://fasef.welcometoodf.org/uploads/1/3/0/9/130969465/kutazitejavipe.pdf
    • http://purifage.bareblisswaxing.com/uploads/1/3/1/6/131637016/zilusujer.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/peposorutap.pdf
    • https://cdn.shopify.com/s/files/1/0430/4440/5397/files/69418788927.pdf
    • https://cdn.shopify.com/s/files/1/0437/6684/1505/files/andhra_jyothi_telugu_news_paper_anantapur_district_edition_version.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2292/files/98414867680.pdf
    • https://cdn.shopify.com/s/files/1/0439/7439/4014/files/jepotoraxezapezur.pdf
    • https://cdn.shopify.com/s/files/1/0427/7937/7830/files/botany_scientific_names.pdf
    • https://cdn.shopify.com/s/files/1/0428/4206/3004/files/l_astronomie_magazine.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/41446102870.pdf
    • https://cdn.shopify.com/s/files/1/0427/7259/4844/files/48274030944.pdf
    • https://cdn.shopify.com/s/files/1/0435/8003/1135/files/77930258735.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_off000065c6.bin
9b792bf98b66d4e2b4a207ed295cde64f8025cd30441a3c0e0fc9eeafc8e8a80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65C6 5352 bytes
font_01_sfnt_off000077e0.bin
f43bbfd556b7eee943f3ef847ccba3c629a9d117f02b72772e522a41acd51ac6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77E0 10212 bytes

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