Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ca90fbba4c3c9e0…

MALICIOUS

PDF

45.2 KB Created: 2020-08-22 01:10:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 520b2840907f7ec696986d21856b63e0 SHA-1: b87c5375146b318a116ff348a2fa75f11752c1fe SHA-256: 3ca90fbba4c3c9e02b29eac97f8a1c2d6c855454c00540859d595b9b80514ae7
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, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the URL that triggered the redirector heuristic, suggesting a lure to external 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=abcd+movie+video+songs++2012
    • http://xiraxu.ddayhistorian.com/uploads/1/3/1/3/131380429/0ed96ac5dd12426.pdf
    • http://files.livingstonworkforceservices.com/uploads/1/3/1/4/131409200/gupukumezewoma_vogidor_towaz.pdf
    • http://files.rockymountainluxepuffpoodles.com/uploads/1/3/1/1/131164476/9d330.pdf
    • http://files.stoneycreekvillas.net/uploads/1/3/1/1/131164152/257dcc.pdf
    • https://cdn.shopify.com/s/files/1/0431/0407/5933/files/gasinixe.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4899/files/50553722825.pdf
    • https://cdn.shopify.com/s/files/1/0427/7652/7014/files/bruno_stair_lift_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/4906/6397/files/50434516204.pdf
    • https://cdn.shopify.com/s/files/1/0434/0632/7959/files/lujukipikedepoz.pdf
    • https://cdn.shopify.com/s/files/1/0437/4324/8545/files/10537895264.pdf
    • https://cdn.shopify.com/s/files/1/0430/8346/4855/files/13586954311.pdf
    • https://cdn.shopify.com/s/files/1/0430/9064/1045/files/97635032134.pdf
    • https://cdn.shopify.com/s/files/1/0430/5597/2505/files/71209224693.pdf
    • https://cdn.shopify.com/s/files/1/0452/8229/5969/files/colorear_por_numeros_gratis.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_off00005dbc.bin
f623fc50fcfaddc26a3ca57cf47499d4f6e4a9bc8f516043297d4bdd1bb03435		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DBC 5436 bytes
font_01_sfnt_off00007039.bin
76e0f95660a531bafc605d35d0af7916240651abd780470cdecf505e21ea0a45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7039 10236 bytes
font_02_sfnt_off000092e1.bin
39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92E1 16092 bytes

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