Malicious PDF — malware analysis report

Static analysis result for SHA-256 02cd32a661c92eae…

MALICIOUS

PDF

37.9 KB Created: 2020-03-22 12:43:10 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 15a5b14b6e7d8618fd3146a54e4742f7 SHA-1: 712929d5bb86bf8d0bb34c0897ca6d5d5465b239 SHA-256: 02cd32a661c92eae9f72d8bc3de8e94572bd88afb6a79ea81fa4fb0cdf107df9
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of external links, many of which point to other PDF files. This behavior is indicative of a link farm or a mechanism to distribute malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent. No scripts were extracted, but the presence of numerous external links suggests a distribution or redirection mechanism.

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://retrobikesdublin.net/uploads/1/3/0/7/130739626/130739626.html#werewolf+the+apocalypse+20th+anniversary+edition+pdf+download
    • http://angiecentis.com/uploads/1/3/0/2/130272332/f771d716b653eca.pdf
    • http://binhaiwanyulechengzhenqiandubo.f18.ebkf.org/uploads/1/3/0/3/130313178/4903246.pdf
    • http://chloesdoggiedayspa.com/uploads/1/3/0/4/130483647/dinafagegugo-navodilusevon-lapagigoxuxugak-navepefusalivuw.pdf
    • http://www.1sizelandscapearchitects.com/uploads/1/3/0/6/130621542/2393038.pdf
    • http://macquarierooms.com/uploads/1/3/0/3/130379769/3053948.pdf
    • http://trybaton.com/uploads/1/3/0/7/130740325/nozora.pdf
    • http://cubafarmersandartisans.com/uploads/1/3/0/7/130740110/9972695.pdf
    • http://thedragonridersofarvain.com/uploads/1/3/0/3/130313170/c5dfdf07.pdf
    • http://ltcfor.me/uploads/1/3/0/5/130550835/nilulujarel.pdf
    • http://noramanca.com/uploads/1/3/0/6/130639446/8753236.pdf
    • http://lashco.ca/uploads/1/3/0/6/130640107/tenelegotabep.pdf
    • http://kitschorama.com/uploads/1/3/0/8/130814588/4333746.pdf
    • http://3d.cloud.evans-supply.online/uploads/1/3/0/6/130605435/nepopuwulebinikus.pdf
    • http://rjremmel.people.ua.edu/uploads/1/3/0/8/130814900/pideruberok.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_off00006a28.bin
d0ac99d1338d3e890e34fe4a812999aa34615d8b9df8ecbeb26fdd9d3b49319a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A28 8196 bytes

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