Malicious PDF — malware analysis report

Static analysis result for SHA-256 2405007709e9648b…

MALICIOUS

PDF

33.0 KB Created: 2020-08-14 07:37:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46874a92a9d37b296b955092af296c3b SHA-1: 9c2482576a93f05c4e7c276c7f6cb64782770118 SHA-256: 2405007709e9648ba6bfe8602ca6a58880a0bf327f6757dafee1b194cea271cb
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/wb?keyword=bible%20story%20tagalog%20pdf, indicating a lure to disguise malicious redirection. The primary attack pattern involves tricking users into clicking malicious links.

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/wb?keyword=bible%20story%20tagalog%20pdf
    • http://files.publicpolicylaw.com/uploads/1/3/0/8/130874385/652410.pdf
    • http://files.vegan-versions.com/uploads/1/3/1/3/131378975/wafod_zusasat.pdf
    • http://neneda.totalbalanceclinic.co.uk/uploads/1/3/0/9/130969742/midat.pdf
    • http://ninez.lottieslittlerabbitry.com/uploads/1/3/1/3/131384260/gemijobivonebo-serurimufod-pebafi-wivozabaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/5733/2895/files/92311918975.pdf
    • https://cdn.shopify.com/s/files/1/0432/2027/1259/files/gufenijuxexifizonaguzu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2960/2205/files/arduino_building_led_and_espionage_projects.pdf
    • https://cdn.shopify.com/s/files/1/0439/2511/0952/files/air_force_exam_papers.pdf
    • https://cdn.shopify.com/s/files/1/0437/3712/0933/files/tugipomunoworubok.pdf
    • https://cdn.shopify.com/s/files/1/0433/3964/5093/files/35190528526.pdf
    • https://cdn.shopify.com/s/files/1/0435/1049/7434/files/git_update_tag.pdf
    • https://cdn.shopify.com/s/files/1/0431/6469/6738/files/zexeriru.pdf
    • https://cdn.shopify.com/s/files/1/0435/2291/6520/files/xepezifatudexa.pdf
    • https://cdn.shopify.com/s/files/1/0433/9977/4364/files/bezibixili.pdf
    • https://cdn.shopify.com/s/files/1/0434/3241/1298/files/jadujukanuzojuberufepo.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_off00004389.bin
83f03f20cdab32d6d2ff0e685d9b45bc176ac1135aacd16c641087fe6bb66c1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4389 5500 bytes
font_01_sfnt_off00005646.bin
96738bf4610bfe3b8c249c00ef1d358a7005c7917bb8849d23627c5cdec8fad8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5646 9648 bytes

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