Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f39eeb82239ea00…

MALICIOUS

PDF

73.0 KB Created: 2020-08-06 16:53:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d52c8da6a8d3b6eb6a812145cb5a9d2 SHA-1: 7e95e7ea521600433b46ae6f26f7a6d1b99465d4 SHA-256: 1f39eeb82239ea000d2912e455184b31ef5dd528ae59d28d7ddd876054d0d3b2
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a malicious redirector link that points to ttraff.ru, which is flagged as malicious. The document body also contains this URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, likely for SEO manipulation or to obscure the malicious destination.

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=electronic+amplifier+circuits+theory+and+design+pdf
    • http://files.paloaltochineseschool.org/uploads/1/3/1/3/131380005/lekut.pdf
    • http://files.amanda-ring.com/uploads/1/3/0/7/130775123/9065731.pdf
    • http://files.themegaworldlifestyle.com/uploads/1/3/1/4/131482878/6cb2669a0c60c6.pdf
    • https://cdn.shopify.com/s/files/1/0432/5949/4555/files/xigasojogudojigatusoga.pdf
    • https://cdn.shopify.com/s/files/1/0434/0593/4759/files/wwww._dropbox_connect.pdf
    • https://cdn.shopify.com/s/files/1/0428/8672/5795/files/tetoziregeronujasubatizi.pdf
    • https://cdn.shopify.com/s/files/1/0432/0568/9499/files/javascript_format_number_leading_zero.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mituvazejuremoposanizama.pdf
    • https://cdn.shopify.com/s/files/1/0431/4152/9754/files/jopereforo.pdf
    • https://cdn.shopify.com/s/files/1/0434/3159/2102/files/ffxi_leveling_guide_1-_99.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/73972108486.pdf
    • https://cdn.shopify.com/s/files/1/0429/6281/3084/files/nadumojison.pdf
    • https://cdn.shopify.com/s/files/1/0430/4021/1105/files/17393500512.pdf
    • https://cdn.shopify.com/s/files/1/0434/2569/3845/files/ffxiv_legendary_nodes.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/47171602999.pdf
    • https://cdn.shopify.com/s/files/1/0431/6905/4886/files/58255967491.pdf
    • https://cdn.shopify.com/s/files/1/0454/4672/5790/files/angularjs_6_interview_questions.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_off0000dcda.bin
e2df6e2c88f17d1202d0eb989638a95104b168c51d08388c832b0022aa807cd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDCDA 5628 bytes
font_01_sfnt_off0000efe4.bin
3749335bdd3c56f33a47397dc0e9bd960af0ce423898bc74411468580f613d3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE4 11916 bytes

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