Malicious PDF — malware analysis report

Static analysis result for SHA-256 094d7f8b1fa58434…

MALICIOUS

PDF

45.1 KB Created: 2020-03-25 01:06:45 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 0a2ec27987534407ef1072224ad6266e SHA-1: 7ccca55fbad31b8bdf1fd98b14995a09bb01727c SHA-256: 094d7f8b1fa5843411de5977e567c04c14d4f29bf1699f468ca99e04feb21d8c
96 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains URLs that are repeated in the heuristic findings. These URLs likely lead to further malicious content or SEO spam.

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://sabrinablaiklock.com/uploads/1/3/0/3/130324191/130324191.html#pathfinder+gallows+of+madness+pdf
    • http://www.aidanstack.com/uploads/1/3/0/7/130739233/3707d3a9ccc3bb1.pdf
    • http://moovsterrelocation.com/uploads/1/3/0/5/130588468/f05acc1d4117e.pdf
    • http://tu2art.com/uploads/1/3/0/3/130379311/setepulusizigelaxo.pdf
    • http://rosenhaupt.com/uploads/1/3/0/5/130588735/3dc45.pdf
    • http://ssunitedstatesreef.com/uploads/1/3/0/6/130621588/ad01478eb501e5a.pdf
    • http://www.advancednetworx.com/uploads/1/3/0/7/130740393/1839184.pdf
    • http://laselvaproductions.com/uploads/1/3/0/2/130287299/tofajabifeminujo.pdf
    • http://natureswaycbd.co.uk/uploads/1/3/0/2/130270987/3f7e98d2.pdf
    • http://prescottcounseling.org/uploads/1/3/0/6/130639246/niwekebaxupunini.pdf
    • http://bidgroup.se/uploads/1/3/0/3/130313179/gusejugog.pdf
    • http://tandemoniumyoga.com/uploads/1/3/0/5/130539115/vizexo_kiluwi_jiwopepigefosid.pdf
    • http://www.cheznouslanderneau.com/uploads/1/3/0/7/130776577/lukagam_lejodegid_zasegemi.pdf
    • http://nicoleedwardslimited.org/uploads/1/3/0/8/130874362/nekiboleponi.pdf
    • http://maison.boutique/uploads/1/3/0/9/130969461/7226947.pdf
    • http://hitfan.net/uploads/1/3/0/3/130323143/ce8524cbeb034.pdf
    • http://www.ladebla.de/uploads/1/3/0/6/130604056/720596.pdf
    • http://mhfashionusa.com/uploads/1/3/0/6/130639995/xojumokew.pdf
    • http://hedsupfarm.com/uploads/1/3/0/9/130969658/newexi.pdf
    • http://weathertitejob.com/uploads/1/3/0/6/130621758/03677.pdf
    • http://www.comemorandoavida.com/uploads/1/3/0/4/130483132/3803658.pdf
    • http://www.gainmissing.com/uploads/1/3/0/6/130604048/06210.pdf
    • http://editor.pictures/uploads/1/3/0/4/130435893/8628d5d0.pdf
    • http://lessons4life101.com/uploads/1/3/0/3/130323124/wigewid_sidatojod.pdf
    • http://therealtyfinder.com/uploads/1/3/0/4/130477335/kesuwof-rusakebogijan-muzusuwuduxozi-liwilep.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_off0000862a.bin
d4ad6da47dbd28105984d945a77eb8f8bd3fcd0d68fdf51163daaf741f217203		 pdf-font-stream PDF embedded font (sfnt) at offset 0x862A 8324 bytes

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