Malicious PDF — malware analysis report

Static analysis result for SHA-256 93d0202749e4e945…

MALICIOUS

PDF

34.5 KB Created: 2020-03-25 12:43:42 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: edfdf5bca01bbff65c48afc0087b333f SHA-1: 399075d1e884ff1833ff0544d116a51c1ee4d593 SHA-256: 93d0202749e4e945bda7c7618bdb8be483ffa754f167ca3302230c3f7b1d2249
94 Risk Score

Malware Insights

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

The PDF file contains a large number of external links to various domains, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also strongly indicated maliciousness. The embedded URLs point to PDF documents hosted on numerous unrelated domains, suggesting a coordinated effort to create a link farm or distribute malicious content. The primary attack pattern appears to be directing users to a network of potentially compromised or malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://evokefitness.net/uploads/1/3/1/3/131381518/131381518.html#factor+tree+of+964
    • http://pumpkinandblush.com/uploads/1/3/0/6/130603937/kajonujolutozube.pdf
    • http://www.veterantreecarellc.com/uploads/1/3/0/3/130313070/00513.pdf
    • http://panaha.com/uploads/1/3/0/2/130289563/9732911.pdf
    • http://scottdawson.info/uploads/1/3/0/7/130776755/54424d.pdf
    • http://reneegdesigns.com/uploads/1/3/0/5/130588989/wuman_wosamolapap.pdf
    • http://awakenedhealingshop.com/uploads/1/3/0/7/130739967/pogavetoxazojunafep.pdf
    • http://overthetoprentals.com/uploads/1/3/0/7/130775002/b479e.pdf
    • http://briansnider.org/uploads/1/3/0/6/130621248/1e6242c9b6e2402.pdf
    • http://webprotect.akaphipiomega.org/uploads/1/3/0/7/130775379/919133.pdf
    • http://missmillersclassroom.com/uploads/1/3/0/8/130814652/7445529.pdf
    • http://www.southmanchesterpsychology.co.uk/uploads/1/3/0/6/130621542/xajolutetajix.pdf
    • http://lillyhouseofbeauty.com/uploads/1/3/0/9/130969373/90733c47112efe0.pdf
    • http://celebrationandpartysupplies.com/uploads/1/3/0/7/130740222/rewopiw_wawepujux_wawaw_sajafarejenav.pdf
    • http://harrisontdesign.com/uploads/1/3/0/6/130621818/acc9b30.pdf
    • http://936-mulching.com/uploads/1/3/0/9/130969565/6ab55937b5e.pdf
    • http://hostmaster.lpbonin.com/uploads/1/3/0/9/130969750/fogijaf.pdf
    • http://sandsfoleyentertainment.com/uploads/1/3/0/6/130639076/596ca52713b2ce.pdf
    • http://thecottonduck.org/uploads/1/3/0/2/130291996/d6ec7c8013d2e5.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006104.bin
b8e5f9cd7c367bf7a8b32f20dd3153845c5b2db31094e76b34a3c3d7999c366a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6104 7136 bytes

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