Malicious PDF — malware analysis report

Static analysis result for SHA-256 060e79ae1289e786…

MALICIOUS

PDF

42.4 KB Created: 2020-06-11 18:43:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a2f22141f949b8f56415abdb9dc0460 SHA-1: 9ae7ee1e8cafbb34c3e469b0449fbaa1c5e77334 SHA-256: 060e79ae1289e786fcababb3e909f07f3f41bb69e00c24828e7791308147e694
136 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, identified as a link farm, likely intended to redirect users to malicious content or downloads. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document may also instruct users to open a password-protected archive, a common tactic to bypass security scans. While no scripts were directly extracted, the presence of embedded URLs and the ML classification strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://host49.carmichaelnl.com/uploads/1/3/1/6/131636683/131636683.html#download+video+tutorials+free
    • http://castrovalley.info/uploads/1/3/0/2/130272484/vitiduzomuza.pdf
    • http://blog.sunnymspecialty.com/uploads/1/3/2/3/132302735/4d9ebd66a84ba5.pdf
    • http://hometravel.org/uploads/1/3/1/4/131438784/156476bf7.pdf
    • http://224exchangeplace.com/uploads/1/3/0/5/130551487/8775439.pdf
    • http://own-kc.org/uploads/1/3/1/3/131384148/e2c589b100.pdf
    • http://ocils.net/uploads/1/3/1/4/131409574/rulatojuzujofiz-gebuku-kegaz.pdf
    • http://byyoursideac-indiana.com/uploads/1/3/0/4/130475959/78ba68cb.pdf
    • http://iowaestateauctions.net/uploads/1/3/0/6/130603966/e61e832e41c209a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://wubatelevad.files.wordpress.com/2020/06/wurexofinururofogiwut.pdf
    • https://xozekaf917638661.files.wordpress.com/2020/06/mixexatidibatekije.pdf
    • https://sibuvajez.files.wordpress.com/2020/06/44042216616.pdf
    • https://numowikabap.files.wordpress.com/2020/06/5806188048.pdf
    • https://gofiteturape494264367.files.wordpress.com/2020/06/86353858312.pdf
    • https://juwojoxado89904707.files.wordpress.com/2020/06/baxuliditidolajusovug.pdf
    • https://zikurafozudi.files.wordpress.com/2020/06/nuzokimerezududuredife.pdf
    • https://jepovamofeg.files.wordpress.com/2020/06/18978707782.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000754d.bin
dfb58c924c5ec5c47d8d6a2d46c5eb6e4ec1edae6c606bc5e71d65a06f298c4b
pdf-font-stream PDF embedded font (sfnt) at offset 0x754D 12096 bytes