Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0d5eb817caa3204…

MALICIOUS

PDF

32.3 KB Created: 2020-08-25 12:51:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74b8865b0d7b1712b08b0deb3f1312bf SHA-1: f5ab97328ff97412ef84bb4ce218d16eadfbd4bf SHA-256: a0d5eb817caa3204ff158dfd0295bbedc05ce6fb3679ac26cce2af75dd56f127
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in

The PDF file was identified as malicious due to the presence of a large number of external links, a technique often used for SEO poisoning or to redirect users to malicious sites. One of the primary links, 'https://ttraff.ru/pify?keyword=white+butcher+paper+sheets', is flagged as malicious. The document body contains garbled text and embedded URLs, further supporting the malicious intent.

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=white+butcher+paper+sheets
    • http://files.glamorousreputation.com/uploads/1/3/1/3/131398142/ff258e.pdf
    • http://ziponanow.nextlevelfloorcare.com/uploads/1/3/1/6/131637814/nomomapunuvul.pdf
    • https://cdn.shopify.com/s/files/1/0439/5981/2254/files/campana_de_gauss.pdf
    • https://cdn.shopify.com/s/files/1/0439/3569/5016/files/jzyk_angielski_sownictwo_tematyczny_zbir_wicze.pdf
    • https://cdn.shopify.com/s/files/1/0429/9109/1875/files/interview_questions_and_answers_on_java_multithreading.pdf
    • https://cdn.shopify.com/s/files/1/0435/4726/3131/files/fts_kpk_answer_key_2019.pdf
    • https://cdn.shopify.com/s/files/1/0431/3425/5265/files/kevuvojal.pdf
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/ancient_egypt_a_social_history.pdf
    • https://cdn.shopify.com/s/files/1/0430/5797/1362/files/osrs_archery_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/3120/6808/files/81478269410.pdf
    • https://cdn.shopify.com/s/files/1/0429/9961/1553/files/84306033223.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/wopovoxa.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_off0000415a.bin
fb3f483e5e3c5cf90abc0ec48485eca14572f1a47c19cd590e5dae9ceb1ef8e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x415A 5140 bytes
font_01_sfnt_off000052d3.bin
132f87fa204cc2812e0507a12628da76c21b5c527e20dc1100970b0feaed2bd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52D3 9868 bytes

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