Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6a12dd5e1e3fef4…

MALICIOUS

PDF

40.3 KB Created: 2020-08-09 23:33:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8821d864a33a3fa872a267336ef94f3f SHA-1: faf6004d12eecba10d5df558da2451d440cd9202 SHA-256: d6a12dd5e1e3fef4d3e9cb1d41b939102f979a5d099e0e098168b774fddae33a
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the string 'https://ttraff.cc/pify?keyword=network+architecture+diagram+pdf', indicating a lure to a malicious site. The presence of numerous PDF links suggests an attempt to distribute or host malicious content. 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=network+architecture+diagram+pdf
    • http://files.kn.eliteedu.org/uploads/1/3/1/6/131606876/rovemulir.pdf
    • http://files.barbaravanwijnendaele.com/uploads/1/3/1/4/131454523/saxamoramew.pdf
    • http://files.allisondgarrett.com/uploads/1/3/0/7/130775180/7850469.pdf
    • http://xewobuwu.christianfitnesstv.com/uploads/1/3/0/8/130814328/zumatanunajo-rasolurop.pdf
    • https://cdn.shopify.com/s/files/1/0430/6645/8266/files/39830337383.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2791/files/xilupevagugajibefimosupaj.pdf
    • https://cdn.shopify.com/s/files/1/0438/4843/3829/files/cnidaria_characteristics.pdf
    • https://cdn.shopify.com/s/files/1/0430/5531/7149/files/pejebogazugita.pdf
    • https://cdn.shopify.com/s/files/1/0437/4485/4165/files/kurenikuxerunasewivopaweg.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/69560861510.pdf
    • https://cdn.shopify.com/s/files/1/0431/6420/5216/files/alliance_leveling_guide.pdf
    • https://cdn.shopify.com/s/files/1/0439/1328/1688/files/kusimezaze.pdf
    • https://cdn.shopify.com/s/files/1/0431/1393/9110/files/allosteric_regulation_of_enzymes.pdf
    • https://cdn.shopify.com/s/files/1/0434/6878/3766/files/29163637612.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2832/files/bukarulukozigusabopefij.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_off00005fd3.bin
be479e07abe985ad5809c346434bb02302483a3b8127e8f45b7ea6df26dc8e00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD3 5484 bytes
font_01_sfnt_off00007270.bin
8b9b631bae7ff0622db43516306bf80204759f57dd7bbaef3fa965edf837ce6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7270 9980 bytes

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