Malicious PDF — malware analysis report

Static analysis result for SHA-256 8465a4e454ec76e0…

MALICIOUS

PDF

43.4 KB Created: 2020-08-11 16:53:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6e1b29e37e8c66a9dc7714b0956aae5 SHA-1: 1dceeb90666018a95c6e826947d469a1743d87c4 SHA-256: 8465a4e454ec76e0b0b15b7ded4ff18839204631c626e81cf790e18f0ea0876d
150 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, masquerading as a resource on conflict resolution. The primary link directs to a known malicious redirector, ttraff.ru, which likely serves as a gateway to further malicious content. The document's structure and content strongly suggest a phishing or social engineering attempt to lead users to harmful websites.

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=5+methods+of+conflict+resolution+pdf
    • http://files.enfesnefes.com/uploads/1/3/0/7/130739037/dozolojo-levibupejo-japubonumasu.pdf
    • http://files.tidytimeservices.com/uploads/1/3/0/8/130874522/jijojebobazejij.pdf
    • http://files.bluejupiter.com/uploads/1/3/1/4/131438353/30eadc60b5d.pdf
    • https://cdn.shopify.com/s/files/1/0438/5072/7584/files/writing_academic_english_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0432/6827/6384/files/aafp_board_review_questions.pdf
    • https://cdn.shopify.com/s/files/1/0438/3450/7426/files/fungal_disease_in_plants.pdf
    • https://cdn.shopify.com/s/files/1/0443/9392/2726/files/importance_of_biology_in_our_daily_life.pdf
    • https://cdn.shopify.com/s/files/1/0429/6006/0567/files/xivemokazinu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1152/2209/files/fuvejuwovivulad.pdf
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/vudelopubazuwenona.pdf
    • https://cdn.shopify.com/s/files/1/0434/0531/2163/files/asm_mfe_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0936/7454/files/xegejibikotuniwotefolik.pdf
    • https://cdn.shopify.com/s/files/1/0435/7154/4225/files/cogic_affirmation_of_faith.pdf
    • https://cdn.shopify.com/s/files/1/0430/9018/2304/files/zezosujofajuwu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8923/9969/files/investment_banking_and_financial_services.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_off00006c52.bin
3977309ce79ae6dbe80418ad8b847b98d71f52f323d5cd3d840d27acc93139a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C52 5212 bytes
font_01_sfnt_off00007dee.bin
a889c94f18f9f4c9c23a766a3d319d501d0a8f01226a60989c86622e5fceec4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DEE 10188 bytes

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