Malicious PDF — malware analysis report

Static analysis result for SHA-256 99f579b5fc426b89…

MALICIOUS

PDF

35.3 KB Created: 2020-06-07 07:33:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d03094fba565969b9cdbc632dd30099b SHA-1: 564262ef5b7f68d3a28229b236b927c6e43ca109 SHA-256: 99f579b5fc426b894e0fa303a2efbade26199c9bfbda516dc22b48e85e007c71
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a large number of external links, many of which point to other PDF files hosted on similar domains. This behavior is indicative of a link farm designed to host malicious content or redirect users to phishing sites. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://ingevanboven.nl/uploads/1/3/1/3/131381150/131381150.html#frozen+songs+download+pagalworld
    • http://thebogocard.net/uploads/1/3/0/3/130323477/xisukimopewera.pdf
    • http://cwballc.com/uploads/1/3/1/1/131164266/5508240.pdf
    • http://athomecincinnati.com/uploads/1/3/0/6/130621952/visukuk.pdf
    • http://max-rein.com/uploads/1/3/0/3/130313111/3769789.pdf
    • http://bright--futures.com/uploads/1/3/0/7/130775331/5c2466b7ab4ed.pdf
    • http://thefourbards.com/uploads/1/3/0/5/130547846/tifibosawasedus-wilanufumoriga.pdf
    • https://vadameworon.files.wordpress.com/2020/06/20972282468.pdf
    • https://nidiximas.files.wordpress.com/2020/06/83667844910.pdf
    • https://potavetuzeva.files.wordpress.com/2020/06/vaxapujerifumes.pdf
    • https://xejolaxutibu.files.wordpress.com/2020/06/74663044587.pdf
    • https://raxoxatubu.files.wordpress.com/2020/06/26060342915.pdf
    • https://xididegafe.files.wordpress.com/2020/06/46324835427.pdf
    • https://bavorekivaso.files.wordpress.com/2020/06/13312745249.pdf
    • https://tiseled.files.wordpress.com/2020/06/29620366446.pdf
    • https://jawuwaj.files.wordpress.com/2020/06/warevonidebupoxeziv.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_off00005f34.bin
bb0ff345c50addd0fa71b77ba81b4e3ce4d8411b436fd2cb2bd200e3b0f04770		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F34 10208 bytes

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