Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0b4c1f81413ba36…

MALICIOUS

PDF

69.6 KB Created: 2020-08-15 09:36:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ae906f5bbfc059ecab7e438360cf411 SHA-1: 1222af4fef2b720471ab2afa0ce915e6241ecfa3 SHA-256: d0b4c1f81413ba362d422e71a188d8c5bbf0fe56cdda9fdfc770724cda8155ec
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one heuristic specifically identifying it as a PDF SEO link farm. The primary malicious URL, 'https://ttraff.com/wb?keyword=la%20lengua%20de%20las%20mariposas%20rivas%20pdf', is flagged as a malicious redirector. This suggests the document's purpose is to redirect users to malicious content through a network of links, potentially for phishing or malware distribution.

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.com/wb?keyword=la%20lengua%20de%20las%20mariposas%20rivas%20pdf
    • http://files.harlequinlabradors.com/uploads/1/3/0/8/130813732/6ab52245f3.pdf
    • http://files.thewinstonreview.com/uploads/1/3/1/8/131871674/4137251.pdf
    • https://cdn.shopify.com/s/files/1/0429/9368/0547/files/redistribution_of_moments.pdf
    • https://cdn.shopify.com/s/files/1/0435/2969/9482/files/widimogoxel.pdf
    • https://cdn.shopify.com/s/files/1/0432/5064/7204/files/94891084933.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/83840371306.pdf
    • https://cdn.shopify.com/s/files/1/0433/4940/9960/files/herbs_and_spices_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0431/5004/9446/files/jejob.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/google_driverless_car_project_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/7179/0494/files/2018.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nisexabidubukov.pdf
    • https://cdn.shopify.com/s/files/1/0432/8869/0841/files/functional_analysis_book_by_limaye.pdf
    • https://cdn.shopify.com/s/files/1/0433/2548/9320/files/best_key_for_push_to_talk.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/40756623356.pdf
    • https://cdn.shopify.com/s/files/1/0428/3976/9254/files/cbse_11th_biology_textbook_free_download.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_off0000cb9c.bin
a40cfc91e77824967c66c2a3191b0e65844fd42ac7a6d5335ba4d1fc9bf76e79		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB9C 5364 bytes
font_01_sfnt_off0000ddd0.bin
cb0027009d401e8b9977728002163a644ec82d7e36941d0aa1f24d705b52ef4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD0 13312 bytes

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