Malicious PDF — malware analysis report

Static analysis result for SHA-256 948389afbf6a1a61…

MALICIOUS

PDF

34.0 KB Created: 2020-08-05 18:16:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97633a8f98cef840fe7a92f940f3ba95 SHA-1: c035f2ec0f8fa78df871c8d925508ac6019a6ca7 SHA-256: 948389afbf6a1a61dfc9377962414bb6f4940115f04b287632a3a424f63be2f6
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a download for a Dremel 3000 manual. This indicates a phishing or scam attempt designed to lead users to malicious content. The document also features a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic to increase visibility. No scripts were extracted, but the primary malicious functionality appears to be the redirection to the malicious URL.

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.cc/pify?keyword=manual+dremel+3000+portugues+pdf
    • http://files.pendleventures.com/uploads/1/3/0/7/130775598/8228145.pdf
    • http://xinelutok.peoplematteralways.com/uploads/1/3/0/7/130775735/tulodisoraru.pdf
    • http://files.nanooknutrition.com/uploads/1/3/1/4/131437139/227512.pdf
    • http://wedabof.createitdiystudio.com/uploads/1/3/0/7/130775085/wevalexake.pdf
    • https://cdn.shopify.com/s/files/1/0430/4610/9341/files/19898440100.pdf
    • https://cdn.shopify.com/s/files/1/0436/9580/0475/files/65020318116.pdf
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/bubererajuno.pdf
    • https://cdn.shopify.com/s/files/1/0428/8072/9251/files/motulamovegenelofaninov.pdf
    • https://cdn.shopify.com/s/files/1/0429/7215/1959/files/63633695380.pdf
    • https://cdn.shopify.com/s/files/1/0434/2143/4023/files/mo_form_149.pdf
    • https://cdn.shopify.com/s/files/1/0430/9565/4554/files/58070474342.pdf
    • https://cdn.shopify.com/s/files/1/0432/6031/3768/files/mastering_bitcoin_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bararilisubolubudikolumo.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_off00004551.bin
2fa5c32d0b63a2f709d95ff8c36c65bca4f25ff36f3fddb5b75d706f0de3aee9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4551 5672 bytes
font_01_sfnt_off0000588e.bin
a2de44210a0c4a9bdca22f02ce05c32637d3c918bbb68a8cc46917fa2698dedc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x588E 10136 bytes

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