Malicious PDF — malware analysis report

Static analysis result for SHA-256 0567de723f1192db…

MALICIOUS

PDF

31.1 KB Created: 2020-03-26 12:07:13 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d4d8b4ca31db14e928c85615d1f03701 SHA-1: c7f4034c5a1615f4af252b935c6d039219d71498 SHA-256: 0567de723f1192db93e3ee7deb976637ed026f7ab825e5311ab983db466cf1d9
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, disguised as movie content, which is characteristic of a link farm or SEO spam campaign. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of numerous external links. While no scripts were explicitly extracted, the embedded URLs suggest an attempt to redirect users to potentially malicious websites for further exploitation or phishing.

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://jessejenner.com/uploads/1/3/0/5/130588810/130588810.html#the+hunger+games+1+full+movie+watch+online
    • http://laurenaliceavery.com/uploads/1/3/0/4/130436122/a56ab8e56374.pdf
    • http://pps-ltd.business/uploads/1/3/0/5/130590393/1727c.pdf
    • http://mx.denverconnected.com/uploads/1/3/0/6/130604881/jodemaboxowidi.pdf
    • http://crosbyirontonmusic.org/uploads/1/3/0/4/130435734/tefotosa_bilanesataduxij_mewabajonopo.pdf
    • http://www.thewrightagent.net/uploads/1/3/0/6/130621583/najanivenowuf.pdf
    • http://riverportlandscaping.com/uploads/1/3/0/7/130738697/givuwupemapukev_tativub.pdf
    • http://k12checkout.com/uploads/1/3/0/2/130289693/9ed0b34f4b1de.pdf
    • http://www.polestarbuzz.com/uploads/1/3/0/5/130550775/redafivoxevamubu.pdf
    • http://outofthecageministries.com/uploads/1/3/1/1/131164479/misofew_jimedalilago.pdf
    • http://www.salzmans.com/uploads/1/3/0/3/130323161/9cfe54dd445d5.pdf
    • http://frasierhealthcare.com/uploads/1/3/0/6/130639059/mogaxazuwolademesa.pdf
    • http://www.invisionaryarts.com/uploads/1/3/0/6/130604725/9edc281b4c389f3.pdf
    • http://joyfulacts.com/uploads/1/3/0/7/130739945/782e4873c.pdf
    • http://getmedalert.net/uploads/1/3/0/6/130603809/wulabopife-gijarif.pdf
    • http://stockmi.com/uploads/1/3/0/5/130590163/34f30dfccf20f.pdf
    • http://cmimmobiliaresrl.com/uploads/1/3/0/8/130874493/8178558.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_off00005538.bin
83cec8cb13f5385aef007788d47c45ac766558bfa51b6e03169d193f7b587f9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5538 6484 bytes

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