Malicious PDF — malware analysis report

Static analysis result for SHA-256 70992db451e5be68…

MALICIOUS

PDF

41.3 KB Created: 2020-04-02 13:42:52 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ce96ba99b51fba1ce313b78fbcc0cca1 SHA-1: f50072fd7bb3457fe8aede325985a66580d88e63 SHA-256: 70992db451e5be68f49918c5c109cad30f192d349810e67a7b90cd9535f65a65
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by an ML classifier as malicious. It contains a large number of external links, indicating a potential link farm or a method to distribute further malicious content. The document body contains garbled text and URLs, suggesting it is not intended for legitimate user consumption. The primary attack pattern observed is the mass distribution of external links, likely for SEO manipulation or to redirect users to malicious sites.

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://pastriesaudain.com/uploads/1/3/0/5/130551746/130551746.html#que+tan+buena+es+la+madera+mdf
    • http://lambandlion.org/uploads/1/3/0/5/130588614/wopexowedox-kivasixavezufa-bofiz-vizupaxosizag.pdf
    • http://path-to-wellness-llc.com/uploads/1/3/0/4/130483990/7730659.pdf
    • http://abdullahabuizza.com/uploads/1/3/0/6/130639445/f5ce6df33bc3fd.pdf
    • http://sueporemba.net/uploads/1/3/0/6/130604606/6480715.pdf
    • http://aaasecurityadt.com/uploads/1/3/1/4/131410662/6497ed6572de3.pdf
    • http://huurschuur.nl/uploads/1/3/0/3/130324288/827af04289.pdf
    • http://wealthwavedallas.com/uploads/1/3/0/7/130740143/xolevokajisupik_napug_nebof.pdf
    • http://parkinaegina.com/uploads/1/3/0/6/130639284/dupage-bedijumepozej.pdf
    • http://clarkeashton.com/uploads/1/3/0/3/130379770/lilafesurupoto.pdf
    • http://candleandcocktail.com/uploads/1/3/0/3/130323143/mosigugakati_sefane_wifamosuwij_wasaz.pdf
    • http://toughandcaring.com/uploads/1/3/0/7/130776368/mugibekemuxenaw-guxiroraveki-tigizaz-dimop.pdf
    • http://shift-coach.com/uploads/1/3/0/7/130775808/sumazazobetulotib.pdf
    • http://e15fuel.org/uploads/1/3/0/4/130483480/xujamifiw.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_off000077c9.bin
cbbe70a1ce2ecdba6a69d21b0de1a8ad2b4118b9f2ed5997f55e02a5fb7c0c39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77C9 8560 bytes

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