Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6464e871538dab7…

MALICIOUS

PDF

43.5 KB Created: 2020-08-09 07:57:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c3b5b21f5ad4799c6a35bcab678cae7 SHA-1: 60bad9e12d1f25e37eb954e626dedd305874db84 SHA-256: d6464e871538dab765c5c74029e06c3ed3d69a90fd28e634f5437ee88e222dde
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=phonetic+alphabet+police+pdf', which is likely intended to lead the user to malicious content. The presence of numerous external PDF links suggests a link farm or SEO poisoning attempt to distribute malicious content.

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=phonetic+alphabet+police+pdf
    • http://files.253469.com/uploads/1/3/0/8/130874317/137145.pdf
    • http://files.educationfrosh.com/uploads/1/3/1/4/131438195/bovokimoselopa.pdf
    • http://files.eloisekerr.co.uk/uploads/1/3/1/4/131453267/5d9aaceb9a80df5.pdf
    • http://files.srgchi.org/uploads/1/3/1/3/131379951/zitejumewibopux_bajugetelor_dobiwezo_golubimuruz.pdf
    • http://files.catkredefinedesign.net/uploads/1/3/1/1/131163774/4468725.pdf
    • https://cdn.shopify.com/s/files/1/0430/5698/8317/files/12528950946.pdf
    • https://cdn.shopify.com/s/files/1/0435/2226/1143/files/best_ffxiv_parser.pdf
    • https://cdn.shopify.com/s/files/1/0428/2440/1063/files/ruvovufemusuxuxipa.pdf
    • https://cdn.shopify.com/s/files/1/0449/8112/5278/files/assonance_and_alliteration_are_different_types_of.pdf
    • https://cdn.shopify.com/s/files/1/0436/5575/7977/files/72236764997.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/kovigajafilarenifud.pdf
    • https://cdn.shopify.com/s/files/1/0433/7133/1734/files/81301497842.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3784/files/nekolimuzuvidulorag.pdf
    • https://cdn.shopify.com/s/files/1/0432/2256/5032/files/pafejap.pdf
    • https://cdn.shopify.com/s/files/1/0435/9041/8591/files/nenavibokubiza.pdf
    • https://cdn.shopify.com/s/files/1/0432/8410/3332/files/nodozexezofijazovowuwuti.pdf
    • https://cdn.shopify.com/s/files/1/0431/9812/0096/files/40203992622.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_off00006664.bin
9704f46935edb571c4afeae4ab995027028639a68e67262220e5b80065aedd27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6664 5112 bytes
font_01_sfnt_off000077c1.bin
7c18553c352d40b7b4e2ca3fa1043c3027621a6af573743954374bdba55d834c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77C1 12880 bytes

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