Malicious PDF — malware analysis report

Static analysis result for SHA-256 df51e0170458bd61…

MALICIOUS

PDF

48.2 KB Created: 2020-05-04 23:15:23 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 41cf8161da6016131fd3bcd70df32e03 SHA-1: b9ba7f217b0ccbfe5c4ad621b01f5ce6d22be278 SHA-256: df51e0170458bd61a516f1c78d34e2d2901b7998c1718f961ff1659cb7c837c6
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or distribution network. The document body contains a reference to 'Amyloid formation in prion diseases' and includes several of these external URLs, indicating a potential lure or content filler. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://minnesotahydrographics.com/uploads/1/3/0/2/130289577/130289577.html#amyloid+formation+in+prion+diseases
    • http://mchenrycountygopac.com/uploads/1/3/0/5/130551935/8569917.pdf
    • http://egbertegret.com/uploads/1/3/0/9/130969816/4274100.pdf
    • http://longbeachtrafficlawyer.com/uploads/1/3/0/5/130550903/5893381.pdf
    • http://shopdorothys.com/uploads/1/3/1/3/131381480/redupifub.pdf
    • http://msgholdingsbenefits.com/uploads/1/3/0/4/130490609/1391358.pdf
    • http://miksmagick.net/uploads/1/3/0/5/130543539/risetagofituz-wuselagazezeko.pdf
    • http://seymourthunderzone.com/uploads/1/3/0/8/130874469/1767544.pdf
    • http://honkifyourhungry.com/uploads/1/3/0/5/130590180/wagojeledopojazen.pdf
    • http://mpm-consult.com/uploads/1/3/0/2/130273789/6760458.pdf
    • http://dinzybeats.com/uploads/1/3/0/3/130379252/7914734.pdf
    • http://clearsignsinterpreting.com/uploads/1/3/0/7/130776489/8b4135f.pdf
    • http://northcoloradomedevac.com/uploads/1/3/0/6/130621149/birujowijujuw-tedumapetenara-jizukafisimada-wavokejopom.pdf
    • http://dashincar.com/uploads/1/3/1/3/131380754/vabebaperuvajidara.pdf
    • http://wholeheartart.com/uploads/1/3/0/3/130313854/xokomekazejije.pdf
    • http://mjtshirtquilts.com/uploads/1/3/0/5/130540788/rejotanipixe_jagewa_lawomukixugozi_fovejewe.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000915d.bin
34c06a49279f278c20ef6278cfce20059d8cac5ba7272ef7442c732eb3360070		 pdf-font-stream PDF embedded font (sfnt) at offset 0x915D 10820 bytes

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