Malicious PDF — malware analysis report

Static analysis result for SHA-256 587c55356eba732e…

MALICIOUS

PDF

43.2 KB Created: 2020-07-29 09:38:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50d2b51404321c36bd0bc084f4cfafcb SHA-1: 64598dd0d78ca2b13045164e5ff770f98f001f9e SHA-256: 587c55356eba732ec2b4ab27d70ff12ab884e0759dda92630f761923abb14af7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=cancer+information+in+kannada'. This URL is likely used to lure users into clicking and potentially downloading further malware. The file also exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com, suggesting an attempt to manipulate search engine results or distribute malicious content. No scripts were extracted, but the presence of a malicious redirector is a strong indicator of a phishing or social engineering attack.

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=cancer+information+in+kannada
    • http://files.birthbabiesbeyond.com/uploads/1/3/1/4/131407226/putomexejuwokawad.pdf
    • http://files.freefringefest.com/uploads/1/3/1/3/131378780/1b26ebb5bbe0.pdf
    • http://files.bakingbeast.com/uploads/1/3/1/4/131437123/5991956.pdf
    • http://files.morrisadvohealth.com/uploads/1/3/1/4/131438672/saturigoludebede.pdf
    • https://cdn.shopify.com/s/files/1/0433/6913/6280/files/99070163212.pdf
    • https://cdn.shopify.com/s/files/1/0437/2732/3301/files/53321489888.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99913566500.pdf
    • https://cdn.shopify.com/s/files/1/0435/2468/5975/files/pipifofepi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34456372212.pdf
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/43438794285.pdf
    • https://cdn.shopify.com/s/files/1/0430/4194/7801/files/gulugaju.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49816413057.pdf
    • https://cdn.shopify.com/s/files/1/0435/8553/6161/files/gavivulasabotuwokam.pdf
    • https://cdn.shopify.com/s/files/1/0436/8406/9526/files/mawiki.pdf
    • https://cdn.shopify.com/s/files/1/0433/4118/5189/files/74633114581.pdf
    • https://cdn.shopify.com/s/files/1/0431/3058/5239/files/2327987907.pdf
    • https://cdn.shopify.com/s/files/1/0433/9400/7191/files/12577088135.pdf
    • https://cdn.shopify.com/s/files/1/0429/0949/9551/files/46480942652.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e92.bin
f4b7e1793acc667fcd9e1bf4ef1f3d5f604c0e81147677b8edff9ea9b0b014d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E92 4832 bytes
font_01_sfnt_off00006edb.bin
d8e4b7f44dfb66ea49c7f1cefd345a391fade3fb548cc17de4cdbf151663dabd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EDB 6068 bytes
font_02_sfnt_off00007e8b.bin
ea51bf472180b0acc2fd1a653e92747456d8879ae22dca8a8f126c166faa1365		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E8B 9548 bytes

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