Malicious PDF — malware analysis report

Static analysis result for SHA-256 e561a00357f84021…

MALICIOUS

PDF

23.7 KB Created: 2020-05-30 04:14:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 39b1e5b777a4b1d4a6d7bdd7038855c7 SHA-1: cb134e1eeccb66a771a8296424496231096079bd SHA-256: e561a00357f8402189d73798cfda544bed3bcfe22302cdb8cdec0b44fa10a285
114 Risk Score

Malware Insights

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

The PDF is identified as an image-only lure, typical of phishing campaigns. It contains a large number of external links, many pointing to other PDF files on different domains, suggesting a link farm or SEO poisoning tactic. The primary lure appears to be the URL http://artistictastescatering.com/uploads/1/3/0/5/130540284/130540284.html#black+ops+1+famas, which likely leads to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9805

Heuristics 5

  • 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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 23 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://artistictastescatering.com/uploads/1/3/0/5/130540284/130540284.html#black+ops+1+famas
    • http://big-boss-money.com/uploads/1/3/0/5/130539270/7580023.pdf
    • http://ffheartoffire.com/uploads/1/3/1/1/131164562/nulapoj.pdf
    • http://spicycitysg.com/uploads/1/3/0/6/130621809/2d050.pdf
    • http://connollydesignmaine.com/uploads/1/3/0/3/130313140/f98a723bcd62a.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_off00003a5b.bin
caf5b152ba1a347311cd86c72a87adce50998f5f1fe0bebd6f60f785da5acbe2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3A5B 7740 bytes

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