Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eced2ec0091f129…

MALICIOUS

PDF

58.0 KB Created: 2020-03-17 21:40:56 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: a2505bc574d8f569f42a56f2dcfa24a7 SHA-1: f3b3018b985fa3d18ab17e6792b99f249c5fa126 SHA-256: 8eced2ec0091f129e4c1d96c7443c7d5c4cbbf8039fb5f30a89d7d8893063a21
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to similarly structured URLs on different domains. This pattern is indicative of a link farm designed to manipulate search engine rankings or distribute malicious content. The primary URL, http://juliejesternewman.com/uploads/1/3/0/4/130436130/130436130.html#par%C3%A1lisis+cerebral+traducido+al+ingl%C3%A9s, suggests a lure related to 'cerebral paralysis translated to English'. The heuristic PDF_SEO_LINK_FARM specifically flags this behavior, indicating a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://juliejesternewman.com/uploads/1/3/0/4/130436130/130436130.html#par%C3%A1lisis+cerebral+traducido+al+ingl%C3%A9s PDF link annotation
    • http://mail.jennawatt.co.uk/uploads/1/3/0/5/130543761/sepozuk.pdfIn PDF document text
    • http://laschober.net/uploads/1/3/0/2/130287553/sosulofizexef-nutafevuzu-mulafe.pdfIn PDF document text
    • http://shapenv.com/uploads/1/3/0/4/130436127/nisefugubifelewapap.pdfIn PDF document text
    • http://taekwondo-scorpions.net/uploads/1/3/0/6/130603978/polepabimo-leroda.pdfIn PDF document text
    • http://partabcdeasyas123.com/uploads/1/3/0/6/130620618/xikixokosiwefib.pdfIn PDF document text
    • http://sheageist.com/uploads/1/3/0/7/130775865/temojiri.pdfIn PDF document text
    • http://cerrahomes.com/uploads/1/3/0/6/130604729/3778729.pdfIn PDF document text
    • http://kelownamicroacupuncture.com/uploads/1/3/0/7/130775145/bedoga.pdfIn PDF document text
    • http://bluesmokebbq.org/uploads/1/3/0/6/130603937/seregowewavakoma.pdfIn PDF document text
    • http://www.deepdrillinginsights.com/uploads/1/3/0/3/130379096/5293675.pdfIn PDF document text
    • http://adaptiveplanningconsultant.com/uploads/1/3/0/6/130604788/lowavagef_nijotigiti.pdfIn PDF document text
    • http://www.albanyhr.com/uploads/1/3/0/6/130605133/fanasegewoja.pdfIn PDF document text
    • http://clearviewbicyouth.com/uploads/1/3/0/6/130622114/dfbcb21b223af.pdfIn PDF document text
    • http://loughborough-woodcrafts.com/uploads/1/3/0/7/130775965/votekaxugeso_bifeguduxijozi.pdfIn PDF document text
    • http://fancymynails.com/uploads/1/3/0/8/130874474/mowidabazeku.pdfIn PDF document text
    • http://bonnsbroncos.com/uploads/1/3/0/8/130874492/rabiwalajujukepolope.pdfIn PDF document text
    • http://citizens-medicare.com/uploads/1/3/0/5/130550756/ragijagovem.pdfIn PDF document text
    • http://mljmusic.org/uploads/1/3/0/6/130605161/17625ecddd.pdfIn PDF document text
    • http://www.harnesslabels.co.uk/uploads/1/3/0/3/130313153/00fe2.pdfIn PDF document text
    • http://whirlwindlabs.co/uploads/1/3/0/6/130639027/gazovofuzeteri.pdfIn PDF document text
    • http://missionepossibilehk.com/uploads/1/3/0/2/130289242/e19bf320b5fc54.pdfIn PDF document text
    • http://agreaterstorm.com/uploads/1/3/0/4/130476493/1114234.pdfIn PDF document text
    • http://bamboo-straw.shop/uploads/1/3/0/3/130379430/dokumabititu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a195.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA195 8948 bytes
SHA-256: 85988f63e64c8ff613447aea031f1824eab00615c38d19c8003aac7cb9d784da
font_01_sfnt_off0000c1d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1D2 16204 bytes
SHA-256: f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d

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