Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cc10c08969efa16…

MALICIOUS

PDF

40.2 KB Created: 2020-04-10 15:26:28 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 92c9e72b45ba029015274c2cc6f8ae9a SHA-1: e3437ef0c82925a7de3f35d839102045ad8f1e68 SHA-256: 7cc10c08969efa1661c63aad061001c9efa229f13d9ea84ccb5d682ffe69561d
96 Risk Score

Malware Insights

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

The PDF document contains a heuristic firing indicating a large number of external PDF links, suggesting a link farm or distribution mechanism. The embedded URLs point to various domains, all structured similarly with numeric identifiers, reinforcing the link farm hypothesis. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://benkregel.com/uploads/1/3/0/5/130539202/130539202.html#truth+red+white+and+black
    • http://callkevin.net/uploads/1/3/0/4/130478123/xowidojef_muzigotime.pdf
    • http://beautifulskinatlanta.com/uploads/1/3/0/5/130546343/1904711.pdf
    • http://savannahsoule.com/uploads/1/3/0/6/130639145/sedewabatokoxule.pdf
    • http://precisionaluminumconstruction.com/uploads/1/3/1/3/131379054/sovatinax.pdf
    • http://goldengearcustoms.com/uploads/1/3/1/4/131410872/9960494.pdf
    • http://johnpatrickokeefe.net/uploads/1/3/0/3/130313157/10a6d94ff44dd.pdf
    • http://fulfillingsforlife.com/uploads/1/3/0/6/130621588/5777746.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_off000075af.bin
0225f5329fd808ed4afc265504583fa1965839bda2d72c768c05f577d724ff23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75AF 7980 bytes

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