Malicious PDF — malware analysis report

Static analysis result for SHA-256 e498c90a8bff2a0c…

MALICIOUS

PDF

40.1 KB Created: 2020-03-20 10:24:55 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ea0528462509e39b7b17b1c7ff8ec4d3 SHA-1: f74bed808929b87a50ce043ee234f472bb3df0d3 SHA-256: e498c90a8bff2a0cb5ea147652615d14b97ff4bfc841e0a3ecf90e20b9ef71c9
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many of which point to domains with numeric or generic slugs, indicative of a link farm or SEO poisoning tactic. The ML classifier strongly flagged this PDF as malicious. The document body, though partially corrupted, contains the text 'Norma oficial mexicana para empaques', suggesting a lure to disguise the malicious intent. The primary attack pattern involves redirecting users to potentially malicious websites hosted on domains like bellabkc.com and toothgirl.shop.

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://bellabkc.com/uploads/1/3/0/4/130488382/130488382.html#norma+oficial+mexicana+para+empaques
    • http://toothgirl.shop/uploads/1/3/0/6/130604610/8636663.pdf
    • http://workingdeadfilm.com/uploads/1/3/0/3/130323251/zuxudelova.pdf
    • http://abigailklassen.com/uploads/1/3/0/3/130323091/257961caa379.pdf
    • http://vonnietechsolutions.com/uploads/1/3/0/7/130739072/pozafotafozo_liminasodi.pdf
    • http://qutasa.com/uploads/1/3/0/4/130488934/nizemutaxif.pdf
    • http://yungpop.com/uploads/1/3/0/6/130621649/f077505a31.pdf
    • http://weeblyreviews.com/uploads/1/3/0/2/130289436/4898834.pdf
    • http://olympicoptical.net/uploads/1/3/0/6/130639956/2513787.pdf
    • http://garysautorepairservice.com/uploads/1/3/0/4/130489536/7954189.pdf
    • http://www.organizefortranquillity.com/uploads/1/3/1/1/131164136/luzipidix_resare.pdf
    • http://baldguymusic.net/uploads/1/3/0/8/130813447/a4c26d499d.pdf
    • http://honeycombjs.com/uploads/1/3/0/5/130589163/9171177.pdf
    • http://mythbay.com/uploads/1/3/0/5/130588337/kufufetoji.pdf
    • http://bestcloudphoneservice.com/uploads/1/3/0/6/130605435/lowaw_vuzamaso.pdf
    • http://medinalawgroup.org/uploads/1/3/0/5/130544584/pedazelumi.pdf
    • http://mail.pow-miafamilies.org/uploads/1/3/0/3/130323789/rovixita.pdf
    • http://nevadalawguide.com/uploads/1/3/0/6/130620529/2a79532a18e454.pdf
    • http://acupointgem.com/uploads/1/3/0/7/130776169/bb3ea7792f24.pdf
    • http://nrginst.net/uploads/1/3/0/4/130435729/2306865.pdf
    • http://mta-sts.mail.jonathangu.com/uploads/1/3/0/2/130272364/1215744.pdf
    • http://accoladetechnoheights.com/uploads/1/3/0/6/130604014/lujageni.pdf
    • http://www.ironworkma.com/uploads/1/3/0/8/130815058/lotaj-genarekok.pdf
    • http://anatdubinjewelry.com/uploads/1/3/0/2/130291471/c1f99a24.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_off0000712a.bin
9df128980808d1b320f87af8b33c2703790c624440d79c340ce05803ddf09ff7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x712A 8872 bytes

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