Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4f4f2cdd66148ca…

MALICIOUS

PDF

36.9 KB Created: 2020-05-20 21:41:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 30c06ccc0f6e68139b5a011a2796089f SHA-1: e4ed1c077b4fec0268e8cd1e607b006d212686db SHA-256: e4f4f2cdd66148caa66c15c52261699f4797829d0df4f0e371e9a248c727329f
94 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO spam or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a link farm. The document body contains text related to drivers and software, suggesting a lure for potentially unwanted or malicious software downloads.

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://tsunamisushirestaurant.com/uploads/1/3/0/4/130478709/130478709.html#tritton+usb+2.0+vga+adapter+driver+windows+7
    • http://abetamassage.com/uploads/1/3/0/4/130483670/dixirulogizup_dikanodufoku_golonoruv_pawebanekotij.pdf
    • http://geraldpalmer.ca/uploads/1/3/0/4/130435701/8949728.pdf
    • http://foundingcrowd.com/uploads/1/3/0/5/130589401/64bcc597fd12b.pdf
    • http://midnightcoastgroup.co/uploads/1/3/0/4/130488091/timokav.pdf
    • http://sarahmannsart.com/uploads/1/3/0/4/130476976/ce1df4685e3516f.pdf
    • http://dawnhomesut.com/uploads/1/3/1/6/131637024/dibijis.pdf
    • http://leaderkast.com/uploads/1/3/0/7/130739937/8404732.pdf
    • http://inknolascreenprinting.com/uploads/1/3/1/3/131379379/regesutuxugobe-zejid-vukesuk-zevodewoji.pdf
    • http://utloans.net/uploads/1/3/0/6/130604922/0ac43d3bc8066.pdf
    • http://agroecologyinternational.org/uploads/1/3/0/2/130274028/ruxunalelil.pdf
    • http://pippropertymanagement.com/uploads/1/3/1/3/131380210/4d11fe976395a.pdf
    • http://mattieseatsandtreats.com/uploads/1/3/0/6/130621334/bb6ba348.pdf
    • http://dexteramed.com/uploads/1/3/1/6/131606002/423748.pdf
    • http://pennsylvania-trucking-accident-lawyers.com/uploads/1/3/0/2/130271016/nureredekagu-lirefosubazel-nosetulaxek.pdf
    • http://finapo.net/uploads/1/3/1/3/131380420/9474363.pdf
    • http://moxiepants.com/uploads/1/3/1/3/131380934/guvekeluzerupun_wepiwozo.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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065dc.bin
bbb2d2db89625211921faf9f2265fbd51e29cf15b3654a98ec5b9a9b04accf0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65DC 11048 bytes

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