Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c3e55ad20693afa…

MALICIOUS

PDF

42.5 KB Created: 2020-08-01 12:15:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: baed203289d611248fd0f853053bd0db SHA-1: cb75f214e96c6a521fce663c6e9670f0bca827ef SHA-256: 2c3e55ad20693afa755e631f81cfa8db0637703e123ed1a64ebd8319b81a27c9
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though malformed, suggests a lure related to a car owner's manual. The heuristic firings indicate that the PDF is designed to redirect users to malicious infrastructure, likely as part of a phishing or SEO spam campaign.

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.com/pify?keyword=2015+toyota+sienna+owners+manual+pdf
    • http://files.swrh.co.uk/uploads/1/3/1/3/131379591/3480312.pdf
    • http://files.weeronawelding.com/uploads/1/3/1/4/131454383/6680213.pdf
    • http://files.teachartathome.com/uploads/1/3/1/8/131871518/tibexo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/gafiwanaxag.pdf
    • https://cdn.shopify.com/s/files/1/0431/3120/7837/files/94792076937.pdf
    • https://cdn.shopify.com/s/files/1/0432/6332/8424/files/88537584027.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3854/files/josadixu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5928/1061/files/xatawasej.pdf
    • https://cdn.shopify.com/s/files/1/0428/6867/0620/files/pivelajej.pdf
    • https://cdn.shopify.com/s/files/1/0428/2299/2028/files/nusipo.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6537/files/84577039546.pdf
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/gekizon.pdf
    • https://cdn.shopify.com/s/files/1/0433/7808/1955/files/firefox_windows_xp.pdf
    • https://cdn.shopify.com/s/files/1/0428/5857/8086/files/worabesubitifelugabowik.pdf
    • https://cdn.shopify.com/s/files/1/0428/5690/6918/files/75516939809.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/16240792295.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_off00006717.bin
cc16964f9d50da9b211af7d6f4d7d1d3b279abd8cd1f4bbd6454ff3e264cb049		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6717 5736 bytes
font_01_sfnt_off00007aa9.bin
6417d6c0434a121f16da4b5b1ae432b417b7b975173a61cf2154d6c57b460014		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA9 10048 bytes

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