Malicious PDF — malware analysis report

Static analysis result for SHA-256 4df98c5ab3dd58a6…

MALICIOUS

PDF

35.6 KB Created: 2020-07-31 23:13:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5039422b203ec1e0378dd52cf449de2b SHA-1: 29d939e0cbfd5187c3aa268baca8fe6314670837 SHA-256: 4df98c5ab3dd58a6f51afc4853dc7329d7aa1ea1637b34c7ffe115b716d75ad0
128 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link to 'https://ttraff.ru/pify?keyword=garmin+430+simulator'. The document body also contains this URL and other PDF links hosted on Shopify, suggesting a lure to download potentially malicious content. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=garmin+430+simulator
    • http://files.mrsrogersanatomy.com/uploads/1/3/1/1/131164311/3211444.pdf
    • http://files.veganconcertinas.co.uk/uploads/1/3/1/0/131070374/tinotireritixil.pdf
    • http://files.thepetshelter.org/uploads/1/3/1/4/131453206/3123e89538e935.pdf
    • http://files.cyndelladdison.com/uploads/1/3/1/3/131384663/fasutozus_remazir_lusowanafa_sanizixa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9177/2063/files/66870690527.pdf
    • https://cdn.shopify.com/s/files/1/0436/6453/9798/files/38215447059.pdf
    • https://cdn.shopify.com/s/files/1/0429/5353/9747/files/bufedilezavabo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3601/6802/files/wofugonajolosizomibi.pdf
    • https://cdn.shopify.com/s/files/1/0437/3292/6616/files/mukobesirotazedapovudomig.pdf
    • https://cdn.shopify.com/s/files/1/0427/6381/3020/files/60942192743.pdf
    • https://cdn.shopify.com/s/files/1/0437/7896/5656/files/9432277376.pdf
    • https://cdn.shopify.com/s/files/1/0431/1361/1421/files/5110566516.pdf
    • https://cdn.shopify.com/s/files/1/0440/2721/6037/files/bogabuvolepenoretu.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_off00004e2b.bin
a6a9f25615377f0098c4d3218a80cb101f54dc13e9a133bf202b95363c18cfa7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E2B 5256 bytes
font_01_sfnt_off00005ff6.bin
afeac54dbd49c883129f6d83e27916430c67a2b61ddb2a06d9332f608fcf47bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF6 10040 bytes

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