Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddbb184b2d6596f…

MALICIOUS

PDF

47.2 KB Created: 2020-09-03 07:30:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 964da910921a54f99b7ab8dc5251ab51 SHA-1: 13f0d3e2d11c470467aaffcc0d0856c4b871c289 SHA-256: 3ddbb184b2d6596f0a1620f82116fa83783954f7262253965a721e198994ce76
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.club/wix?keyword=arduino+uno+wifi+datasheet', suggesting a lure to a malicious site. Another heuristic identified a large number of PDF links, many hosted on Shopify, likely part of a link farm to improve SEO for malicious content.

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.club/wix?keyword=arduino+uno+wifi+datasheet
    • https://cdn.shopify.com/s/files/1/0430/3598/4029/files/10378767553.pdf
    • https://cdn.shopify.com/s/files/1/0431/0577/9863/files/xesisanebuvoro.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19941062624.pdf
    • https://cdn.shopify.com/s/files/1/0437/6389/2375/files/cisco_book_200_125.pdf
    • https://cdn.shopify.com/s/files/1/0436/2511/9904/files/nemugotuxumelanuxa.pdf
    • https://cdn.shopify.com/s/files/1/0438/2477/5330/files/arihant_neet_books_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42228357160.pdf
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/vewepofitaboj.pdf
    • https://cdn.shopify.com/s/files/1/0431/7151/2480/files/batezifozuwiripukoz.pdf
    • https://cdn.shopify.com/s/files/1/0459/6049/5263/files/kupegele.pdf
    • https://cdn.shopify.com/s/files/1/0446/9365/1610/files/goodbye_my_lover_video.pdf
    • https://cdn.shopify.com/s/files/1/0429/6025/7177/files/29833467584.pdf
    • https://static.usrfiles.com/ugd/b8c837_946623de2c8d4ae1bfa3c9e658859ce4.pdf
    • https://static.usrfiles.com/ugd/8de238_d0a7c51d34bd4c9aa97730646bb6833d.pdf
    • https://static.usrfiles.com/ugd/21e6f2_20f715de7b63439f96845ab147715066.pdf
    • https://static.usrfiles.com/ugd/b8c837_7542c7f67ad24ae6b4c755e5b9fd0709.pdf
    • https://static.usrfiles.com/ugd/694d5d_fb2b8228d0874adb8b4dab51d66e6588.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_off00007421.bin
1400f702085b45fabcd4c257a4ef1c8603bb2b20d918c26a9f4e95c1f9d1ec60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7421 5044 bytes
font_01_sfnt_off00008557.bin
dbcecd80b4294a1bde0f3236fbb8ad06db8bde1055ba1d002808163e48fce851		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8557 13544 bytes

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