Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6c4b8ae2ef4e2b8…

MALICIOUS

PDF

38.2 KB Created: 2020-08-08 00:54:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d18988752449dd460bbedc951c0cab0 SHA-1: c99450e9792350b72939cb4cbe74147f1c9e3d3b SHA-256: a6c4b8ae2ef4e2b84243a57183e37f8909a4d491838f5c3ba97619069fec7a26
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate book downloads, but one of the primary links redirects to a known malicious infrastructure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this malicious redirector. The document body, though heavily obfuscated, contains the same book title as the malicious URL, suggesting a lure to trick users into clicking the malicious link. No scripts were extracted from this sample.

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=apprenticed+to+a+himalayan+master+a+yogi+s+autobiography+pdf+download
    • http://juzifugul.applelenses.com/uploads/1/3/1/4/131453109/munavomisegulilox.pdf
    • http://files.hillsviewmontessori.com/uploads/1/3/0/7/130775084/63659.pdf
    • http://files.gbpsu.org/uploads/1/3/1/4/131408970/xirisa.pdf
    • http://files.noreencoupenpleinair.com/uploads/1/3/2/6/132682119/vujamuxajutawel.pdf
    • https://cdn.shopify.com/s/files/1/0433/2329/3864/files/jofozikixobevewo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9928/3863/files/4548483160.pdf
    • https://cdn.shopify.com/s/files/1/0429/9289/4115/files/zetipanozefokepunatibede.pdf
    • https://cdn.shopify.com/s/files/1/0436/6021/4425/files/modern_ukulele_songs.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/jazonufufoweporimowij.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/tewanerafubaxulekev.pdf
    • https://cdn.shopify.com/s/files/1/0433/3420/5590/files/my_curse_killswitch_engage_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20424522606.pdf
    • https://cdn.shopify.com/s/files/1/0432/3796/5986/files/dazokowosa.pdf
    • https://cdn.shopify.com/s/files/1/0435/5470/1461/files/3397468199.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_off00005586.bin
784340dd6ae1df6a89549a7d6f5c5180b073a1267ec9f50c0ce70a5ce3a68259		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5586 5892 bytes
font_01_sfnt_off0000697b.bin
d8b7e4a1ae5cc5464ecc6cb7b8c881516bf988481cd5f7e27ba15d5de9e8136f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x697B 9916 bytes

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