Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d36c9d3263e8df7…

MALICIOUS

PDF

27.7 KB Created: 2020-04-27 18:22:23 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b8071db5835b1c01d58a4d9f58be194c SHA-1: 0827ae0b59b907c57773470eb6ca5a37f14bf5cb SHA-256: 6d36c9d3263e8df727cb9bc06433527c33e724448f5f7d6ec3705bb5b2dceff0
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links to other PDF files hosted on various domains, indicating a link farm or content distribution scheme. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external URIs supports this assessment. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact payload or intent beyond link distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://perillianconsulting.com/uploads/1/3/0/8/130874608/130874608.html#arabesco+vetor++gratis
    • http://proudparents315.com/uploads/1/3/0/6/130605325/a8c223c9be461.pdf
    • http://mercyhomes.net/uploads/1/3/1/3/131380453/5274177.pdf
    • http://mona-qatar.com/uploads/1/3/0/8/130813692/befixetarudajemit.pdf
    • http://lovethe147.com/uploads/1/3/0/4/130483263/nexolukixagifi_kijunopuboveli_verikibaxidomo_dibolibatajinur.pdf
    • http://rosevalleyland.info/uploads/1/3/1/4/131438110/bawolewolup-rediloxesulu-jetibub.pdf
    • http://thesaltymermaid.net/uploads/1/3/0/3/130313634/6319145.pdf
    • http://tinypixxels.com/uploads/1/3/1/4/131406847/sifupavedebadorikax.pdf
    • http://shanghaihotelthemovie.com/uploads/1/3/0/6/130603994/7181025.pdf
    • http://haddadmedicalanddentalcentre.com/uploads/1/3/0/5/130588370/mozimixisinugedeb.pdf
    • http://nenaclements.com/uploads/1/3/0/5/130589345/b1b76f9e27.pdf
    • http://designsbydebi.shop/uploads/1/3/1/4/131483772/4626276.pdf
    • http://guthealthreboot.com/uploads/1/3/0/5/130538870/vefelakodemow.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_off00004af8.bin
ec679ebe3e76306241fceac728fdacc6cbd7c5e6862cb48f78f9da72f0259685		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AF8 6064 bytes

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