Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa3551d72a8b553c…

MALICIOUS

PDF

68.6 KB Created: 2020-08-10 00:16:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 700420ee6b1a65aec29501b7d787b1ad SHA-1: dc9805b82b811cc69094d37bda0e0d20e97bf969 SHA-256: fa3551d72a8b553c17d534860169e722a50eec4d6415390828766b7ceeff4989
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, with a critical heuristic firing for a 'PDF_SEO_LINK_FARM'. One of the primary links, 'https://ttraff.cc/pify?keyword=blacksmith+workshop+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to the primary malicious URL, suggesting the document's purpose is to drive traffic to this malicious redirector.

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=blacksmith+workshop+pdf
    • http://files.merrifieldseminar.com/uploads/1/3/2/7/132710655/7749287.pdf
    • http://files.zion-top.org/uploads/1/3/0/8/130813934/geriz.pdf
    • http://files.charlemagnemilitaria.com/uploads/1/3/0/8/130873822/7434512.pdf
    • http://files.celebratewithstringsattached.com/uploads/1/3/0/7/130775108/fibilemipesi-nowedobebumabed-juzibaj-pevirijezo.pdf
    • http://files.palmcoastflautorepair.com/uploads/1/3/2/8/132815054/kuxepetaji-rafojuxefozur-powinuvof-fasagokofefu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3723/7148/files/pepuzaxalom.pdf
    • https://cdn.shopify.com/s/files/1/0436/4291/2926/files/58406289782.pdf
    • https://cdn.shopify.com/s/files/1/0448/4349/9677/files/almagesto_italiano.pdf
    • https://cdn.shopify.com/s/files/1/0437/9744/6816/files/62841201178.pdf
    • https://cdn.shopify.com/s/files/1/0447/2622/3001/files/accounts_payable_and_accounts_receivable.pdf
    • https://cdn.shopify.com/s/files/1/0436/4691/0624/files/463758403.pdf
    • https://cdn.shopify.com/s/files/1/0430/0472/3349/files/34680057202.pdf
    • https://cdn.shopify.com/s/files/1/0435/3399/2085/files/bevaj.pdf
    • https://cdn.shopify.com/s/files/1/0427/8334/2748/files/68725946521.pdf
    • https://cdn.shopify.com/s/files/1/0432/1535/6067/files/44201017766.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_off0000cd6c.bin
89b23256ca8445620019a2f850bd3bf6b993a261e98c46e92ba9a81faeb18e12		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD6C 5600 bytes
font_01_sfnt_off0000e062.bin
d51326a2746557d50776af91c3937609bfea259d1075ce7157ca6ac7e743e0d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE062 10888 bytes

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