Malicious PDF — malware analysis report

Static analysis result for SHA-256 a02a0afc5fb214d6…

MALICIOUS

PDF

38.1 KB Created: 2020-03-29 11:45:01 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 236411e432e5f10870a3cf30dfeafaa2 SHA-1: 9db26968cc641dd69c846776aa90f7727064ee5f SHA-256: a02a0afc5fb214d6a79aba08ee4c601477ded7653bb76402edf4186b0d8e9ce8
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF file contains a large number of external links to other PDF files hosted on various domains, suggesting a link farm or redirection tactic. The ML classifier strongly indicated maliciousness. The primary attack pattern involves directing users to a multitude of external resources, likely for SEO manipulation or to host further malicious content.

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://rehphotography.org/uploads/1/3/0/4/130483514/130483514.html#the+red+wheelbarrow+analysis+enotes
    • http://tusconssteakhouse.com/uploads/1/3/0/8/130874397/kebovovemo.pdf
    • http://sacredcirclecounseling.com/uploads/1/3/0/5/130588459/5503875.pdf
    • http://spirit2earth.com/uploads/1/3/0/3/130313091/5245055.pdf
    • http://aitiolures.com/uploads/1/3/0/7/130739154/zalupigokuru.pdf
    • http://lizreinertson.com/uploads/1/3/0/2/130289242/juwafodu.pdf
    • http://jacobswellbyron.com/uploads/1/3/1/3/131384232/1340766.pdf
    • http://goaldecision.net/uploads/1/3/0/2/130271161/fakader.pdf
    • http://jordanmacken.com/uploads/1/3/0/6/130605218/segidab.pdf
    • http://catandbobbin.com/uploads/1/3/0/6/130604874/2223438.pdf
    • http://miamicustomtours.com/uploads/1/3/0/4/130436188/9530193.pdf
    • http://webmail.collisterunitedmethodist.org/uploads/1/3/0/4/130436095/d48941db9.pdf
    • http://influx.ca/uploads/1/3/0/5/130544968/76e9c3.pdf
    • http://craftsmancolorado.info/uploads/1/3/0/2/130287493/woval.pdf
    • http://embraceot.org/uploads/1/3/0/6/130639241/9c9efa.pdf
    • http://ritual-wear.com/uploads/1/3/0/7/130776602/6775073.pdf
    • http://drivenwildmn.com/uploads/1/3/0/7/130739401/ac6aca4.pdf
    • http://psmmanagement.com/uploads/1/3/0/7/130776239/3898133.pdf
    • http://plukblications.nl/uploads/1/3/0/6/130621669/82a75b7e5.pdf
    • http://yacine-belahcene.com/uploads/1/3/0/8/130874366/fenebijokojaror.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_off00006e77.bin
5fdea7fd70b181da3c820b878a6e2aedc5492201a5c46b9db90fe311f21fd4d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E77 7364 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.