Malicious PDF — malware analysis report

Static analysis result for SHA-256 910789c5b1299bb5…

MALICIOUS

PDF

40.3 KB Created: 2020-08-06 09:04:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe049b9f7dec00bbbb9267082393907a SHA-1: bd176adccbae1f9654e1b61a0d5b948e8b668aa9 SHA-256: 910789c5b1299bb56118be6d1d09d14c0a67b23c09597d5f6b97dc0bd2e59f5a
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=almas+gemelas+libro+pdf+gratis'. This URL is likely part of a phishing or scam campaign designed to redirect users to malicious content. The document also contains a large number of external PDF links, many hosted on Shopify, which is flagged as a link farm, further indicating a deceptive purpose.

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=almas+gemelas+libro+pdf+gratis
    • http://files.mackinawvet.com/uploads/1/3/0/8/130873822/2234604.pdf
    • http://files.brew-tech.org/uploads/1/3/1/8/131856860/c266cca.pdf
    • http://ladijulol.stpetersmorrison.com/uploads/1/3/2/3/132303189/kaserowovenagilek.pdf
    • https://cdn.shopify.com/s/files/1/0440/4648/3606/files/bokerufivolefibe.pdf
    • https://cdn.shopify.com/s/files/1/0431/1747/8044/files/87052711850.pdf
    • https://cdn.shopify.com/s/files/1/0435/7786/8443/files/lobawebonalipogap.pdf
    • https://cdn.shopify.com/s/files/1/0434/7671/3637/files/zotitivujofus.pdf
    • https://cdn.shopify.com/s/files/1/0431/2619/4336/files/dubugud.pdf
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/eclectic_counseling_approach.pdf
    • https://cdn.shopify.com/s/files/1/0429/9217/3217/files/sokavebisaleteware.pdf
    • https://cdn.shopify.com/s/files/1/0434/0455/8488/files/kegorozirimur.pdf
    • https://cdn.shopify.com/s/files/1/0435/4228/2399/files/98933331875.pdf
    • https://cdn.shopify.com/s/files/1/0430/1642/1529/files/wezozakibafazif.pdf
    • https://cdn.shopify.com/s/files/1/0432/8049/8841/files/55116553629.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_off00005da0.bin
2212ee80aeb773fa5ddeb2221aebf19a3a07634719f243b239b81f73ac967b25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA0 5492 bytes
font_01_sfnt_off0000702d.bin
dd45134830fe8583d98bc4bffb1f11aa049ca661912156628e5aee54db370163		 pdf-font-stream PDF embedded font (sfnt) at offset 0x702D 11268 bytes

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