Malicious PDF — malware analysis report

Static analysis result for SHA-256 0deb6dfc453128dd…

MALICIOUS

PDF

69.5 KB Created: 2020-04-13 22:53:46 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: bdde067913d24d50d016feb510373584 SHA-1: a7634345bf075b7410837120573a569b874e5521 SHA-256: 0deb6dfc453128ddd9ed8f7a07ead097b2b2cccb6aa04cb12df855931749cf4e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of external links, characteristic of a link farm or SEO spam. The document body, though partially corrupted, mentions medical terms, suggesting a lure to attract unsuspecting users. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent, likely to redirect users to potentially harmful websites or host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://mountainbikedatabase.org/uploads/1/3/0/5/130538866/130538866.html#boutonniere+deformity+and+rheumatoid+arthritis
    • http://fanjoy.net/uploads/1/3/0/5/130551920/ralegukupokizodu.pdf
    • http://btstires.com/uploads/1/3/0/6/130621703/ruwidutip.pdf
    • http://tamtamstitches.net/uploads/1/3/0/8/130874413/lomekozexifab_bufetaf_saduvekigi.pdf
    • http://statenislandweddingofficiant.com/uploads/1/3/0/6/130604231/nofalofugavozin.pdf
    • http://riceables.com/uploads/1/3/0/4/130483191/41.pdf
    • http://lentonbar.com/uploads/1/3/1/6/131606612/manusabutezuka-pizib-zepupiro.pdf
    • http://williamh.org/uploads/1/3/0/6/130604165/petopozupujakav_vepiwup.pdf
    • http://commercialconsultingservices.com/uploads/1/3/0/5/130551491/9133104.pdf
    • http://modelrepublic.agency/uploads/1/3/0/6/130621285/pidofesetuz_judivatotugajij_derituretiv_jekap.pdf
    • http://dansvorcan.com/uploads/1/3/1/3/131382030/ravemin.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_off0000e8e7.bin
ef7565682ff602c2e54d803678e83c281fee1601db7ea5dbd6f3c15d63d0c761		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E7 8736 bytes

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