Malicious PDF — malware analysis report

Static analysis result for SHA-256 8867a6658a773e53…

MALICIOUS

PDF

31.6 KB Created: 2020-06-13 14:48:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc0e98804824b9817a813c9a45a19b71 SHA-1: 4c98ee97616e858beccfc1ffe929a75087024571 SHA-256: 8867a6658a773e53d4547628eaac4c7a0d793eb67a90ddf3419f2c253d7d99b0
94 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness. No scripts were extracted, but the sheer volume of outbound links suggests a high likelihood of malicious intent, possibly to distribute further malware or phishing content.

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://peopleinsyncltd.com/uploads/1/3/0/3/130313002/130313002.html#racing+car++picture
    • http://mail.areabrooklyn.com/uploads/1/3/0/4/130483163/dalipafalowuvokitit.pdf
    • http://caladivolpe.devsite-1.com/uploads/1/3/1/4/131453096/muguwosopegejixejufi.pdf
    • http://mail.worryknot.co.uk/uploads/1/3/1/8/131871894/8022030.pdf
    • http://cycling.meonsprings.com/uploads/1/3/0/6/130621431/8b1271b83eacd.pdf
    • http://lashandalewismusic.com/uploads/1/3/0/7/130739237/megezuworoxurupase.pdf
    • http://simplysaigeboutique.com/uploads/1/3/0/6/130604286/jazifolin-wedekukilokakof.pdf
    • http://ashleygrandkoskiacupuncture.com/uploads/1/3/1/4/131406437/3016378.pdf
    • http://hostmaster.4140designs.com/uploads/1/3/0/7/130775635/05a0d1c1.pdf
    • http://marleerussell.com/uploads/1/3/1/6/131606578/9160159.pdf
    • http://jolenes-fashions.com/uploads/1/3/0/5/130589171/4331177.pdf
    • http://guaguancofestival.com/uploads/1/3/1/6/131606335/vubatufiza.pdf
    • http://sophistable.com/uploads/1/3/0/8/130813030/6423126.pdf
    • https://fatoturomixo.files.wordpress.com/2020/06/2656859330.pdf
    • https://jezowiv.files.wordpress.com/2020/06/66879892469.pdf
    • https://tagogoxe317728397.files.wordpress.com/2020/06/wakidokupefesilomojiba.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_off000050fc.bin
46c6dd1415411d619e7389b08cd50b431faf19ae47aa6976e5672bf3903e0b52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50FC 10068 bytes

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