Malicious PDF — malware analysis report

Static analysis result for SHA-256 c604f96ae0928b3f…

MALICIOUS

PDF

40.1 KB Created: 2020-04-03 05:46:19 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: a321ae25d6d606c58022147c883866e9 SHA-1: ef3a518aaabeff5ac6897a88c32bffec2e8e210a SHA-256: c604f96ae0928b3f51050be239cca377f2775a1452915e13bc2413519ac4a387
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, a technique commonly used in SEO poisoning to drive traffic to malicious sites. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous PDF links further supports this assessment. The document body contains a superficial lure related to 'young life skit ideas' and the authoring application information, but the primary malicious activity is the distribution of links.

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://essignsofmn.com/uploads/1/3/0/6/130603942/130603942.html#young+life+skit+ideas PDF link annotation
    • http://babagroup.com/uploads/1/3/0/7/130775279/murixid.pdfIn PDF document text
    • http://annmareeshairsalon.com/uploads/1/3/0/6/130605094/wijekitew-taxorebep-powemepaj-zizobavojavu.pdfIn PDF document text
    • http://towheads.org/uploads/1/3/0/5/130588649/vojiranejugufoz.pdfIn PDF document text
    • http://curvesontrend.com/uploads/1/3/1/1/131163867/a7801af08270a.pdfIn PDF document text
    • http://thesussexcollection.com/uploads/1/3/0/5/130550682/gogasemefibimelig.pdfIn PDF document text
    • http://rubybuddha.com/uploads/1/3/0/5/130539658/7258648.pdfIn PDF document text
    • http://bionikids.com/uploads/1/3/0/9/130969700/898f1316c16d4.pdfIn PDF document text
    • http://genreccatalogs.com/uploads/1/3/0/3/130379226/efacf41d5b8d42.pdfIn PDF document text
    • http://theconstructionco.biz/uploads/1/3/1/0/131070713/20d17.pdfIn PDF document text
    • http://kiemtiendientu.org/uploads/1/3/0/8/130813413/dubikoga_sudusabalo_gulaz.pdfIn PDF document text
    • http://initiativesduvivreensemble.com/uploads/1/3/0/3/130313159/vugozog.pdfIn PDF document text
    • http://signaturepoolsandlandscape.com/uploads/1/3/0/9/130969501/xitukeben.pdfIn PDF document text
    • http://manageourbills.org/uploads/1/3/0/6/130604952/1268336.pdfIn PDF document text
    • http://projetoedificar.com/uploads/1/3/0/4/130489052/3945815.pdfIn PDF document text
    • http://thegreenteamservices.com/uploads/1/3/0/8/130874358/jowemonez.pdfIn PDF document text
    • http://toc-out.com/uploads/1/3/0/5/130588225/1947503.pdfIn PDF document text
    • http://telos.studio/uploads/1/3/0/4/130476192/nolomox_jisug_purikagedo_zatetusosikode.pdfIn PDF document text
    • http://cosmic-gypsy-wanderer.org/uploads/1/3/1/3/131381781/gadadujidazog_diwonuzujus_bipujululibud_xofubiluva.pdfIn PDF document text
    • http://pamdecorators.com/uploads/1/3/0/5/130543552/wosomejakikoz.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

Related samples 1

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7139 8448 bytes
SHA-256: a738cf680a4ce5f219176be2bb077caa11c04492ec8a4442e4e7eb1813b66add

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