Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdeb3cd8ddef0bfc…

MALICIOUS

PDF

44.0 KB Created: 2020-07-28 10:06:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65acba5267592efe56e6844a721e50a5 SHA-1: 4b2d079ab17a097e899aa905b81d9fb51690f493 SHA-256: bdeb3cd8ddef0bfc01f3068f7dbfb9d3e38db4b66ffeab3f8d0ffae4b4e71ced
120 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it links to known malicious redirector infrastructure and functions as a link farm. The embedded URL points to a redirector designed to lure users with a keyword related to business reports. While the document body is heavily obfuscated, the presence of these malicious links strongly suggests a phishing or malware distribution attempt.

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=manuscript+format+business+report
    • http://files.dcsq.org/uploads/1/3/1/3/131383630/kixogibotovex_sepajemusarad.pdf
    • http://files.actingcoachlasvegas.com/uploads/1/3/2/6/132681566/lejele.pdf
    • http://files.karmicfreedom.com/uploads/1/3/1/4/131407965/zipadupa.pdf
    • http://files.domyarnell.com/uploads/1/3/0/9/130969656/9682809.pdf
    • http://files.franklinyouthfootball.org/uploads/1/3/0/8/130874350/gadenelokasu_tuxuka.pdf
    • http://files.domyarn
    • https://cdn.shopify.com/s/files/1/0430/1357/0709/files/48673099618.pdf
    • https://cdn.shopify.com/s/files/1/0431/8851/9080/files/xopolodubimowigebo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0501/7255/files/debijoxetisiburumeba.pdf
    • https://cdn.shopify.com/s/files/1/0438/6773/4176/files/58267670384.pdf
    • https://cdn.shopify.com/s/files/1/0436/4389/5966/files/80076626035.pdf
    • https://cdn.shopify.com/s/files/1/0433/8476/6620/files/gekaxolevozajiwosevasifej.pdf
    • https://cdn.shopify.com/s/files/1/0433/2349/0457/files/tukakuti.pdf
    • https://cdn.shopify.com/s/files/1/0434/6842/3334/files/zubosisudukemowizinabano.pdf
    • https://cdn.shopify.com/s/files/1/0433/5576/6942/files/9262093044.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_off00006f54.bin
5f959cb99b08bec914e76372a0a173fc3820d465dd73addc22a0f6ff46861e2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F54 5156 bytes
font_01_sfnt_off000080bf.bin
ef34aa092929ec78d5d9dce66f6b1fa5813dc776a518cd530e76ba8ffa925834		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80BF 10040 bytes

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