Malicious PDF — malware analysis report

Static analysis result for SHA-256 39e4250580aa719f…

MALICIOUS

PDF

47.2 KB Created: 2020-07-08 17:39:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51ecfac3a79b320b4f92fa807625f366 SHA-1: aebb9c18f71d4a0532392797d692636835c6e4b6 SHA-256: 39e4250580aa719ff513cf04200961d785ecc3cde6a8442c972a893a6b732e5b
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, masquerading as a worksheet, that redirect to malicious infrastructure. The primary redirector URL is https://ttraff.cc/wb?keyword=finding%20volume%20of%20cylinders%20cones%20and%20spheres%20worksheet. This technique is commonly used to distribute malware or lead users to phishing sites. 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/wb?keyword=finding%20volume%20of%20cylinders%20cones%20and%20spheres%20worksheet
    • http://files.libyanewslive.com/uploads/1/3/0/8/130873895/dotudikoj_kifatogijer.pdf
    • http://files.frankhagancontracting.com/uploads/1/3/2/6/132681404/zatamutofineve.pdf
    • http://files.creativityindevelopment.co.uk/uploads/1/3/1/4/131453332/1642885.pdf
    • http://files.skzlandscaping.com/uploads/1/3/2/7/132740525/kipafalige.pdf
    • http://files.brushalleyskateshop.com/uploads/1/3/0/8/130873975/zaxudutesajat.pdf
    • http://files.rebeccalynnphotography.net/uploads/1/3/0/8/130874518/4840188.pdf
    • http://files.the-tan-can.com/uploads/1/3/2/8/132815742/bupididaniv.pdf
    • http://files.beccamccreedydesigns.com/uploads/1/3/0/8/130873907/9422286.pdf
    • http://files.dlfinancial.org/uploads/1/3/1/3/131379749/tobij.pdf
    • http://files.theflourishsisterhood.com/uploads/1/3/1/3/131398156/95d18288fa830.pdf
    • http://files.geraldinefirequeen.co.uk/uploads/1/3/0/7/130776578/zezukoveguveduzudipe.pdf
    • https://tarizov.files.wordpress.com/2020/07/6350322629.pdf
    • https://riduvetixaxu.files.wordpress.com/2020/06/55936868607.pdf
    • https://wipofuzub.files.wordpress.com/2020/07/likuwibezuvikusolapifas.pdf
    • https://binojig.files.wordpress.com/2020/07/limepepagasomilavanexe.pdf
    • https://gusabuj.files.wordpress.com/2020/06/2474048095.pdf
    • https://jipebowojor.files.wordpress.com/2020/06/17558668719.pdf
    • https://wafujevu.files.wordpress.com/2020/07/55127676802.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49839171509.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41718344304.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61066914906.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_off000061e0.bin
aaae3906e65edb2db3c566eca847a005c5d40820e5444e02177bce24e19d1171
pdf-font-stream PDF embedded font (sfnt) at offset 0x61E0 5724 bytes
font_01_sfnt_off00007547.bin
5af3a44705242e842836457aea208ebeb621800044af42422697d521f886a7f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7547 10464 bytes
font_02_sfnt_off0000993a.bin
9107d58aaeed13b75e3ea2a799484bc1fb45482f51ade38ce4295f9552f42c94
pdf-font-stream PDF embedded font (sfnt) at offset 0x993A 16392 bytes