Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cfdc61c3576e4da…

MALICIOUS

PDF

45.1 KB Created: 2020-03-22 13:31:41 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 351605519792a3162ab8783762b9b8fb SHA-1: fb4ed06f37d73bab84fb908c515e233a9dadb8db SHA-256: 6cfdc61c3576e4da4953246721114e7b0121f863328955146b82e1c37be3e1f4
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which are numerically or generically named, suggesting a link farm or SEO manipulation tactic. The document body, though partially corrupted, contains a reference to 'Dyson dc24 parts diagram' and includes numerous URLs, indicating a likely attempt to redirect users to potentially malicious content. The ML classifier strongly flagged this PDF as malicious.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://purelinewellness.com/uploads/1/3/0/7/130776525/130776525.html#dyson+dc24+parts+diagram
    • http://www.dmedansky.com/uploads/1/3/0/7/130740513/5805734.pdf
    • http://indyfacepainter.com/uploads/1/3/0/4/130476318/fodobodugit.pdf
    • http://frescosexpress.com/uploads/1/3/0/2/130272973/rikanotowuna.pdf
    • http://megansmission.org/uploads/1/3/0/7/130739201/7d5896397af7.pdf
    • http://benjaminsmithmusic.net/uploads/1/3/0/5/130589429/wanoj.pdf
    • http://nichellejensen4orem.com/uploads/1/3/0/5/130590545/9432774.pdf
    • http://gabbykerrfitness.com/uploads/1/3/0/6/130604620/tiwaketajiduwevop.pdf
    • http://www.kreutingerpuppets.com/uploads/1/3/1/0/131070487/texekod_jozabe_jopanajuw.pdf
    • http://scf.net.au/uploads/1/3/0/2/130289773/dileforekepized.pdf
    • http://pasolibre13.com/uploads/1/3/0/7/130738528/woxejefarevuxoxele.pdf
    • http://equimg.com/uploads/1/3/0/7/130739510/sabomudalofom.pdf
    • http://www.wptwwc.com/uploads/1/3/0/6/130621892/42c4b8.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_off000087bc.bin
323fb9e23b8c2a76bdd57bfa65ef3894a019506af55e9f8c685de8648c4e8914		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87BC 8292 bytes

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