Malicious PDF — malware analysis report

Static analysis result for SHA-256 f56921f426e5afda…

MALICIOUS

PDF

50.9 KB Created: 2020-08-18 13:00:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ab56d2688f871444ad09f29a0ba5df1 SHA-1: 4ba551819bfe320f19f883d78fc2f95dae7b35e2 SHA-256: f56921f426e5afda13d22fbe3ff28903fbc35405028b9c0aca12fd7c5894865e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a link to a known malicious redirector infrastructure, ttraff.com, which is likely used to obscure the final destination of the malicious payload. The document body and embedded links suggest a lure related to 'Aiag vda fmea form', aiming to trick users into clicking the malicious link. The presence of numerous external PDF links further indicates a link farm strategy, common in SEO poisoning attacks.

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/pify?keyword=aiag+vda+fmea+form
    • http://ginoped.nahomiichino.com/uploads/1/3/1/6/131606968/rusumabuzetexep.pdf
    • http://xozom.nysefvolunteers.com/uploads/1/3/1/8/131856190/kuvenatumaboboxakazo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tesip.pdf
    • https://cdn.shopify.com/s/files/1/0433/2729/1544/files/centrosema_plumieri.pdf
    • https://cdn.shopify.com/s/files/1/0437/2873/2314/files/91848617387.pdf
    • https://cdn.shopify.com/s/files/1/0429/9282/8579/files/tugubozexegozorovowurazun.pdf
    • https://cdn.shopify.com/s/files/1/0427/4470/9276/files/west_side_story_maria_piano.pdf
    • https://cdn.shopify.com/s/files/1/0437/6982/3390/files/cerebral_blood_flow_physiology.pdf
    • https://cdn.shopify.com/s/files/1/0438/1694/3778/files/kefoxosokanebipivivizeta.pdf
    • https://cdn.shopify.com/s/files/1/0431/1711/7601/files/biology_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/2141/0210/files/gofalaworixel.pdf
    • https://cdn.shopify.com/s/files/1/0436/5336/5910/files/7640459500.pdf
    • https://cdn.shopify.com/s/files/1/0438/0701/5069/files/ligiguzevemizerasigerola.pdf
    • https://cdn.shopify.com/s/files/1/0438/2192/4514/files/10405763155.pdf
    • https://cdn.shopify.com/s/files/1/0441/0982/4152/files/dasuragawedorumijiduwavex.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_off00008b76.bin
9148bdf141f7823887f461e38606812b037555f6cb908468ff6fa83d58246f48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B76 5064 bytes
font_01_sfnt_off00009ca0.bin
ec4b683aab032baea297b700bacdf865bfab89811da5343ae5ca4f6aa50e5a4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CA0 9996 bytes

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