Malicious PDF — malware analysis report

Static analysis result for SHA-256 49dfc2a0359f7d78…

MALICIOUS

PDF

33.2 KB Created: 2020-08-03 09:30:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a523923945eb79bbfc6c0ad19b34bab9 SHA-1: 83f9e3caae3ca76e23e5c46f8821b2a7cc4649d9 SHA-256: 49dfc2a0359f7d7832c177b5aeaf28df46df734b4f87afe06d2f9548d91a6acf
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains. The document body, though heavily obfuscated, contains the same redirector URL. The primary attack vector appears to be a deceptive link within the PDF that leads to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=the+samurai%2527+s+tale+audiobook
    • http://files.bridgescounselingservices.com/uploads/1/3/1/4/131438296/04f50fbcd11a.pdf
    • http://files.northcoastknitting.org/uploads/1/3/2/7/132740553/1669419.pdf
    • http://files.mrsmilewski.com/uploads/1/3/1/3/131398591/kepifizagev_jabolifedo_lidifudonano_fegiponukopu.pdf
    • http://files.villa-anggrek.com/uploads/1/3/1/3/131379371/difisudenaborex.pdf
    • http://files.stefanodeflorio.com/uploads/1/3/1/3/131378918/6687927.pdf
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/tupezesajarepasujek.pdf
    • https://cdn.shopify.com/s/files/1/0434/8461/0712/files/lejixil.pdf
    • https://cdn.shopify.com/s/files/1/0434/8638/0189/files/tugiziwa.pdf
    • https://cdn.shopify.com/s/files/1/0435/4437/9546/files/manual_miter_saws.pdf
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/96799703661.pdf
    • https://cdn.shopify.com/s/files/1/0431/0866/3456/files/57248840382.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mijafovaginidobu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/fukakata.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/8743436445.pdf
    • https://cdn.shopify.com/s/files/1/0429/9970/9855/files/zewope.pdf
    • https://cdn.shopify.com/s/files/1/0432/1778/0896/files/42711582198.pdf
    • https://cdn.shopify.com/s/files/1/0429/7628/0729/files/27687767557.pdf
    • https://cdn.shopify.com/s/files/1/0430/1373/4563/files/badger_song_lyrics.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_off0000466e.bin
21b619bdf9b99b591307ea1bbcf1d32d5911a7718ef5aa4be3904d13bc7bb1c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x466E 5252 bytes
font_01_sfnt_off00005819.bin
422a2f6e64b3724de3ea29c0b23e50e625f991b1ee4e419347a1bb826aea900a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5819 9336 bytes

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