Malicious PDF — malware analysis report

Static analysis result for SHA-256 47e194159dc6a9cb…

MALICIOUS

PDF

45.4 KB Created: 2020-08-08 06:05:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8dbb5b6747696d89c3481438423984e2 SHA-1: d7dbc08564aa304bd14ccc437317ebd5a2d5211a SHA-256: 47e194159dc6a9cb1186b2af39652d0c3a9fcc3d25ce3a9b4dc906ee9a91df5e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though partially corrupted, suggests a lure related to a 'C to f conversion table pdf'. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a phishing site or malware download. The PDF structure and link farm indicate a delivery mechanism for 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=c+to+f+conversion+table+pdf
    • http://rudoz.amurielyoga.com/uploads/1/3/2/3/132303382/3582414.pdf
    • http://files.mammothsigns.co.uk/uploads/1/3/1/8/131856108/zukedase.pdf
    • http://rajuzik.abbeytennis.com/uploads/1/3/1/4/131453323/3fa692a549b.pdf
    • http://pevevis.johnhaywardsculpture.com/uploads/1/3/1/3/131379246/2582457.pdf
    • https://cdn.shopify.com/s/files/1/0438/0993/1424/files/86053789906.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/kapezokenitexajebotawonuw.pdf
    • https://cdn.shopify.com/s/files/1/0432/5077/8269/files/91164934919.pdf
    • https://cdn.shopify.com/s/files/1/0429/6150/2362/files/jepolunugawopanip.pdf
    • https://cdn.shopify.com/s/files/1/0435/8026/0511/files/nidaxin.pdf
    • https://cdn.shopify.com/s/files/1/0447/5482/9463/files/certified_ethical_hacker_ceh_v10.pdf
    • https://cdn.shopify.com/s/files/1/0433/2702/9400/files/sexikinid.pdf
    • https://cdn.shopify.com/s/files/1/0434/6963/5746/files/58652944998.pdf
    • https://cdn.shopify.com/s/files/1/0438/2218/6656/files/41806076004.pdf
    • https://cdn.shopify.com/s/files/1/0431/5296/5792/files/27759004785.pdf
    • https://cdn.shopify.com/s/files/1/0433/6871/0300/files/vikings_athelstan_s_journal.pdf
    • https://cdn.shopify.com/s/files/1/0435/9425/2456/files/50216981870.pdf
    • https://cdn.shopify.com/s/files/1/0429/0464/9884/files/semuvopufonaban.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_off000069c6.bin
b9c294bef2257622f2f03b5eb82d732a70109c34b1bd6985ba648cc74c77e5aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69C6 5252 bytes
font_01_sfnt_off00007bb4.bin
ccca91244de23ef99ff1229e5606f72ff6148353bb982b18702001702a739cfb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB4 14108 bytes

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