Malicious PDF — malware analysis report

Static analysis result for SHA-256 455d791fb6f377af…

MALICIOUS

PDF

43.0 KB Created: 2020-08-30 04:07:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d9dcdd329c09a6fc2d42bb2d4bd542a SHA-1: ea005bf3de9da8d1508e2cecabc9bbb75b250887 SHA-256: 455d791fb6f377afd254ac013bdcc6f10b8d2a3fa5733b31eb507b06d5cf6d14
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the URL that leads to the malicious redirector, suggesting a lure to a phishing or malware distribution site. The presence of a link farm indicates an attempt to manipulate search engine results or distribute malicious content broadly.

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/wix?keyword=cuentos+para+trabajar+duelo+en+ni%25C3%25B1os
    • https://static.usrfiles.com/ugd/d54300_9e11e115f20c44c186c4517139f9a7eb.pdf
    • https://static.usrfiles.com/ugd/c12414_3dab12fe383b48f9b9e2dfc75828fe6f.pdf
    • https://static.usrfiles.com/ugd/58a813_97db8c9ecc954088bb377665d4a37217.pdf
    • https://static.usrfiles.com/ugd/b8c837_3b469bc7ffd8453a8526982b3674e4be.pdf
    • https://cdn.shopify.com/s/files/1/0459/6875/2807/files/dopoxolunubikoxiwemifapaf.pdf
    • https://cdn.shopify.com/s/files/1/0435/0060/1504/files/whistleblower_and_witness_protection_act_2020.pdf
    • https://cdn.shopify.com/s/files/1/0435/3854/6840/files/dark_souls_best_parry_shield.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/vofovasafod.pdf
    • https://cdn.shopify.com/s/files/1/0431/0935/1585/files/vudozasov.pdf
    • https://cdn.shopify.com/s/files/1/0438/3080/4642/files/65295974482.pdf
    • https://cdn.shopify.com/s/files/1/0439/5512/6430/files/download_barzanji_lengkap.pdf
    • https://cdn.shopify.com/s/files/1/0435/3546/6655/files/pizeduvosu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7732/0352/files/pebisixulekosexubuzo.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_off00006646.bin
53d8b5b4bffcbe6956b2188d46b31270d8be9b9bee7a6d97d555617acd500fb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6646 5288 bytes
font_01_sfnt_off000077fe.bin
10e3fa943e0b68f76b97196871b46cb2b5ee6afc15a19334b1a48c37fd1a5469		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77FE 11368 bytes

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