Malicious PDF — malware analysis report

Static analysis result for SHA-256 30ff0ecdf790524d…

MALICIOUS

PDF

39.2 KB Created: 2020-04-18 03:41:23 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: e817d2663f7817fcd08f1ef7a4a1ce13 SHA-1: 8fb20da31e2f008f1bb4d9433222297b5c8beb8a SHA-256: 30ff0ecdf790524d9e4b6502abbb8b3a6f14c7c05622678f05fc2eb660c14a90
96 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which point to domains that appear to be part of a link farm designed for SEO manipulation. The document body, though partially corrupted, contains references to 'reality show korea love catcher', suggesting a lure to attract user clicks. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent behind the link farm and deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://wakeupirishpoetry.org/uploads/1/3/0/6/130604823/130604823.html#reality+show+korea+love+catcher
    • http://preposemethod.com/uploads/1/3/0/7/130740420/lagegisojaroxikijiz.pdf
    • http://intention-intuitivecoachhawaii.com/uploads/1/3/0/2/130289508/464dac94.pdf
    • http://balmypalmy.com/uploads/1/3/0/6/130620343/a60bb.pdf
    • http://akankshanegi.net/uploads/1/3/1/3/131398489/7006694.pdf
    • http://fragrancize.com/uploads/1/3/0/6/130620565/3376052.pdf
    • http://lakeyshamattis.com/uploads/1/3/0/7/130776810/mesuso.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000571c.bin
3d6526bf8b8e7ec76bf1e320a1c9218d2bc6264b7a9fc698da6ef2bb7704bc09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x571C 8760 bytes
font_01_sfnt_off00007893.bin
cc56ed5d1b406250ef47d237bf9aedbfeb210ab7a26608ba3c4229f2aa92b336		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7893 16576 bytes

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