Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b7e052d36268d32…

MALICIOUS

PDF

38.5 KB Created: 2020-03-07 18:09:39 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7b83b3ac895fc401d32441915181da07 SHA-1: f04d8d3efb7f4daf4463ca737a2a7db828aa3f70 SHA-256: 6b7e052d36268d32e29d070853c5e29407df9f2a2edff587e5f790c637fd3af2
96 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a link farm or SEO spam, embedding a large number of external URLs. The primary URL, http://74-123-77-240.mgwnet.com/uploads/1/3/0/2/130271153/130271153.html#que+es+hemicranea+paroxistica, is likely intended to redirect users to malicious or unwanted content. The ML classifier strongly indicated maliciousness, supporting the assessment of a malicious intent behind the link distribution.

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://74-123-77-240.mgwnet.com/uploads/1/3/0/2/130271153/130271153.html#que+es+hemicranea+paroxistica
    • http://fierceimagination.com/uploads/1/3/0/7/130740082/e2f48226008e.pdf
    • http://backroadblends.com/uploads/1/3/0/4/130483539/lenezu-toremu.pdf
    • http://littleangel.org.uk/uploads/1/3/0/5/130551920/b4307e0a5d6.pdf
    • http://nicolekroutil.com/uploads/1/3/0/6/130603944/gudeko_lubal.pdf
    • http://herebeobjects.org/uploads/1/3/0/6/130639630/regigutinewujof.pdf
    • http://thegreatgreen.org/uploads/1/3/0/5/130539092/93b803683cbd7.pdf
    • http://jashwa.com/uploads/1/3/0/6/130605254/44dddab239.pdf
    • http://sassysistahslashbar.com/uploads/1/3/0/4/130488621/ginumo.pdf
    • http://trulynature.ca/uploads/1/3/0/7/130776452/tupus.pdf
    • http://admin.dragonfiresafety.co.uk/uploads/1/3/0/2/130287894/nijikivufekuma_bijexupaki.pdf
    • http://mail.kolorboxmedia.biz/uploads/1/3/0/7/130775510/4775851.pdf
    • http://elitelifecoaches.net/uploads/1/3/0/5/130590282/1591975.pdf
    • http://everydayrealtygroup.com/uploads/1/3/0/3/130313603/zefijakefadujomi.pdf
    • http://collectivekick.com/uploads/1/3/0/6/130604065/821095.pdf
    • http://www.beccasbakery.net/uploads/1/3/0/8/130814843/dokisosivuv.pdf
    • http://christopherjarvis.co/uploads/1/3/0/8/130814652/7190209.pdf
    • http://childrensxmasparty.fun/uploads/1/3/0/3/130313169/sodal.pdf
    • http://beingtrulyyou.com/uploads/1/3/0/2/130289417/958358.pdf
    • http://shopkashkoutureko.com/uploads/1/3/0/5/130589366/mujazozowovir.pdf
    • http://redraygun.com/uploads/1/3/0/5/130551126/pojowewapovuwogix.pdf
    • http://mail.vseaweed.no/uploads/1/3/0/2/130288830/8087153.pdf
    • http://borisbrew.com/uploads/1/3/0/4/130483273/3d30f91c.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_off00006bbb.bin
4ada470c117e62b911f314721dd0591328e2977965b96531b2aca83590fbc10c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBB 8576 bytes

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