Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd989346ec5f7f85…

MALICIOUS

PDF

39.4 KB Created: 2020-08-28 04:03:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a93a07234922031e15a6b1ef0b6d7d5 SHA-1: 3efb4c89b078ff70f06b7f37fa81176f6e35fb23 SHA-256: fd989346ec5f7f8585d3cc542060e625831a5b5fcb146498480eea8a7ea2b75c
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One of the primary links, 'https://ttraff.ru/pify?keyword=consoling+the+heart+of+jesus+prayer+companion', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting it's the intended lure. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=consoling+the+heart+of+jesus+prayer+companion
    • http://files.topcamfilmservices.com/uploads/1/3/1/3/131380146/f8f7d7ec7cdb55.pdf
    • http://files.panteeny-fertilizers.com/uploads/1/3/1/4/131437725/53e8aefd71.pdf
    • http://files.jbhealth.co.uk/uploads/1/3/0/7/130739183/4307364.pdf
    • https://cdn.shopify.com/s/files/1/0448/0460/4066/files/dyson_dc50_manual.pdf
    • https://cdn.shopify.com/s/files/1/0440/7921/8840/files/h_love_k_whatsapp_status.pdf
    • https://cdn.shopify.com/s/files/1/0438/6367/0944/files/case_study_questions_and_answers_in_management.pdf
    • https://cdn.shopify.com/s/files/1/0429/5753/7439/files/el_capitalismo_consciente.pdf
    • https://cdn.shopify.com/s/files/1/0434/0695/0550/files/forex_hedging_strategy.pdf
    • https://cdn.shopify.com/s/files/1/0439/2986/2312/files/88659862276.pdf
    • https://cdn.shopify.com/s/files/1/0434/4460/0999/files/quarters_korean_bbq.pdf
    • https://cdn.shopify.com/s/files/1/0434/8513/5014/files/rajesitatazaxirujix.pdf
    • https://cdn.shopify.com/s/files/1/0431/4929/5770/files/77488007756.pdf
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/61825935786.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0086/files/descargar_anonytun_pro_apk_2018.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_off00005a41.bin
3cf36ff6fa496e22eaef9db240172624c40a1978fba6e4a4920ba5b6b026abc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A41 5512 bytes
font_01_sfnt_off00006ce6.bin
2fe5e50ad62431e50da18cb506b5436e969fe2f5cdb0dc5608d028413e5315a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE6 10364 bytes

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