Malicious PDF — malware analysis report

Static analysis result for SHA-256 50c5eaa248add26d…

MALICIOUS

PDF

45.4 KB Created: 2020-04-11 02:32:20 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d16975e160946a4217221e5fa74a65ee SHA-1: 19711fe939da05c6ba99fb11fbe302e0ddee27cc SHA-256: 50c5eaa248add26d5af143ae6a94cd3ecd41ae1b8e03f5891f7004034534b1df
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains a link farm of numerous external URLs, many of which are SEO-optimized and appear to be designed to lure users into downloading further content. The ML classifier strongly indicated maliciousness, and the presence of multiple suspicious external links supports a phishing or content-luring attack pattern. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://mysoundcollective.com/uploads/1/3/0/5/130589305/130589305.html#red+dead+redemption+ps3+iso+indir
    • http://wanderingtrailsflowers.com/uploads/1/3/0/5/130541944/pijadelakorele_sojusow_junifit_vuvidojulogerar.pdf
    • http://wildtundraquest.com/uploads/1/3/0/7/130738831/8eaca.pdf
    • http://shanszs.com/uploads/1/3/0/4/130476172/binuxekexuvigem_xudoreziwenozaz.pdf
    • http://gotrustwatch.com/uploads/1/3/0/2/130273624/abf470184b7239.pdf
    • http://selenebasketsantagata.com/uploads/1/3/0/6/130604109/xijewif.pdf
    • http://sjacl.com/uploads/1/3/0/2/130270753/02531.pdf
    • http://wehelpusa.com/uploads/1/3/1/3/131379384/juperefe-sutodu-panagopugegarig-nodemulegipefit.pdf
    • http://craigandfred.com/uploads/1/3/0/8/130814596/zugupodagurujox.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_off00008a89.bin
c0ea6ef468de02710a2d3d75f370e41dec160c7801ece5046e7173d0c1a6f84e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A89 8156 bytes

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