Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb9d71b4a266aa91…

MALICIOUS

PDF

44.8 KB Created: 2020-07-08 16:30:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78ab22194757e49ae061943f90bdec84 SHA-1: 4b14d613949530077a1d9aa09223f007b4f73c0d SHA-256: fb9d71b4a266aa91d52830ce8893b1c5bfd2ce3fd4e12244d3251a1290921370
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, indicating it functions as a link farm designed to redirect users to potentially malicious content. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' specifically flags a URL pointing to known malicious redirector infrastructure. The presence of numerous SEO-optimized PDF links suggests an attempt to distribute malware or phish for credentials through a wide network of compromised or controlled websites.

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.ru/pify?keyword=odontologia+estetica+contemporanea+friedman+pdf
    • http://files.jancancan.com/uploads/1/3/1/4/131406413/sosazidisajawaj-ledosol-vaxodavuv-ziwobedomanefon.pdf
    • http://files.parkhillbowlingclub.com/uploads/1/3/2/8/132815154/4047543.pdf
    • http://files.annishealinggarden.com.au/uploads/1/3/0/7/130776864/kuxafixogudaruwuje.pdf
    • http://files.bulletcreek.com/uploads/1/3/0/9/130969603/587ea470.pdf
    • http://files.negsbestthing.com/uploads/1/3/2/8/132815961/riwemuto.pdf
    • http://files.neilmckenzieyouthfishingcontest.org/uploads/1/3/1/6/131606127/1963708.pdf
    • http://files.ataraxiaphotography.com/uploads/1/3/1/4/131455883/jazozixure.pdf
    • http://files.jeffreystadelman.com/uploads/1/3/0/8/130873830/mevuluni.pdf
    • http://files.accountinguci.com/uploads/1/3/0/8/130873907/wafizelov-josekijaze.pdf
    • http://files.christiestimber.com/uploads/1/3/2/3/132302815/a80bec9c772bc.pdf
    • http://files.bullbearkidsbooks.com/uploads/1/3/2/6/132681404/medewesiposade.pdf
    • http://files.accountinguci.com/uploads/1/3
    • https://xaluwab.files.wordpress.com/2020/07/bigaxejiwitawopo.pdf
    • https://savevawat.files.wordpress.com/2020/07/23162139650.pdf
    • https://xopipovezeru.files.wordpress.com/2020/07/wolenitokadojuxom.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pujofupokutesigitugut.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51220099535.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/womosoravitixugefiwil.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75904593322.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekugoxozeritazol.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91146339154.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mipin.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_off00006fb0.bin
5769d92ceef865abb5cf3d7beeb2ff525e25563df92062857871f773fef693f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB0 5292 bytes
font_01_sfnt_off00008193.bin
156190d38a87cd359ae83959c81cc2a5d22acb760c03b23a340eaea7546fef4c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8193 11128 bytes