Malicious PDF — malware analysis report

Static analysis result for SHA-256 aae7cc5912a8e409…

MALICIOUS

PDF

50.0 KB Created: 2020-03-18 18:13:13 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 8b8811fc6ae18520ef46e96e16d260f3 SHA-1: 6f60c095681aa62f9079794e2a071f7422d376f9 SHA-256: aae7cc5912a8e409ed0a21e090509583f2b605de07343a20833b154c191aebf2
96 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of external links, indicating a link farm or SEO manipulation tactic. The embedded URLs point to various domains, suggesting an attempt to distribute traffic or host content across multiple sites. No scripts were extracted, limiting the analysis of direct malicious actions beyond link redirection.

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://shopbelfast.info/uploads/1/3/0/9/130969559/130969559.html#distribucion+geometrica+pdf PDF link annotation
    • http://double-a-printing.com/uploads/1/3/0/4/130483341/mezavo_sigasofugefe.pdfIn PDF document text
    • http://indynd.com/uploads/1/3/0/2/130273894/7009334.pdfIn PDF document text
    • http://brightsolutionsconsulting.com/uploads/1/3/0/5/130551087/relokunivo_lamolemupomog_xugazibedameda_jukarejafeku.pdfIn PDF document text
    • http://skylinesjewellery.com/uploads/1/3/0/5/130547142/famexusinogu_jekimuma.pdfIn PDF document text
    • http://mail.janithaphotography.com/uploads/1/3/0/5/130588622/tarewizipuzurame.pdfIn PDF document text
    • http://www.nswminiaturepony.com.au/uploads/1/3/0/7/130739618/09750.pdfIn PDF document text
    • http://dollsbyjanet.com/uploads/1/3/0/3/130323143/4690d.pdfIn PDF document text
    • http://nickwood.org/uploads/1/3/0/5/130589302/sobunure.pdfIn PDF document text
    • http://tplsupply.com/uploads/1/3/0/3/130323302/725808.pdfIn PDF document text
    • http://mobyzap.com/uploads/1/3/0/6/130621130/tizivuzijizujosis.pdfIn PDF document text
    • http://msert.net/uploads/1/3/0/2/130270745/tarijinijowaluzur.pdfIn PDF document text
    • http://cpanel.flauntitphotobooths.com.au/uploads/1/3/0/7/130775134/6e7bdd06b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007439.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7439 9252 bytes
SHA-256: 6bfc65bc0564579865162ad91c2e461b077f10e366c676a0fd435075cb22733a
font_01_sfnt_off0000978e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x978E 3512 bytes
SHA-256: 0fc1f98e781124f67c25a06e33d154554bd6ad87902a75d020ac4b26517884d4
font_02_sfnt_off0000a3ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3EA 16404 bytes
SHA-256: bb467b8839c732c1c0ee21a68790a795befe4efbd0bcdd5c7eb01d0c4e3753ad