Malicious PDF — malware analysis report

Static analysis result for SHA-256 143c08c2ce2a08ad…

MALICIOUS

PDF

37.4 KB Created: 2020-06-06 16:43:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-08-25
MD5: 05ec07a0ca019e73d362d0b5cd440cb7 SHA-1: e2b218a8bae3612120cb8c136259d9c56654435e SHA-256: 143c08c2ce2a08adab3326a9b3ea9d0f8d28ef0b89809f2a7e1f59a44f7727e4
96 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The document body, though partially corrupted, contains references to these external URLs, suggesting a malicious intent to redirect users. The ML classifier also strongly flagged this PDF as malicious, indicating a high likelihood of harmful content or redirection.

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://dupreexpresscatering.com/uploads/1/3/0/8/130873839/130873839.html#objetos+con+forma+de+triangulo+para+colorear PDF link annotation
    • http://4ur.undesirable.us/uploads/1/3/0/9/130969011/9436247.pdfIn PDF document text
    • http://mx.arthurkeith.com/uploads/1/3/1/8/131856645/luveze-lelutilet-bavovudogeb-medoxezikutuja.pdfIn PDF document text
    • http://chadnewbry.com/uploads/1/3/0/9/130969471/lisiguze.pdfIn PDF document text
    • http://ironspiritkarate.org/uploads/1/3/0/4/130488382/e99a7.pdfIn PDF document text
    • http://pampertaartjes.com/uploads/1/3/0/5/130551607/7571927.pdfIn PDF document text
    • http://fraggingaround.ca/uploads/1/3/1/4/131453630/a6c0da0ce65706.pdfIn PDF document text
    • http://outfitcoach.de/uploads/1/3/1/4/131438109/487f7bf72ec25f.pdfIn PDF document text
    • http://nemarrealty.com/uploads/1/3/0/6/130639465/temefim.pdfIn PDF document text
    • http://captainschoices.com/uploads/1/3/0/6/130639567/c43d60c33c.pdfIn PDF document text
    • http://tripledsdisposalservices.com/uploads/1/3/0/5/130543264/5394164.pdfIn PDF document text
    • http://offshoreandspecialties.com/uploads/1/3/0/7/130776814/jomaj.pdfIn PDF document text
    • http://injurymassagetherapist.com/uploads/1/3/1/0/131070539/tajelolodafa.pdfIn PDF document text
    • http://n7.undesirable.us/uploads/1/3/2/3/132303082/jevodi.pdfIn PDF document text
    • http://dupreexpresscatering.com/uploads/1/3/0/8/130873839/terms.htmlIn PDF document text
    • http://dupreexpresscatering.com/uploads/1/3/0/8/130873839/dmca.htmlIn PDF document text
    • http://dupreexpresscatering.com/uploads/1/3/0/8/130873839/policy.htmlIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://neguraxopon.files.wordpress.com/2020/06/rawupokudizedubinubota.pdfIn PDF document text
    • https://litosem.files.wordpress.com/2020/06/wekikudewotavif.pdfIn PDF document text
    • https://ropusixowan.files.wordpress.com/2020/06/bixujoxazinakuraxufado.pdfIn PDF document text
    • https://buparogemi.files.wordpress.com/2020/06/xelun.pdfIn PDF document text
    • https://keligorages.files.wordpress.com/2020/06/jusawonebujomudunogakaj.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://scripts.sil.org/OFLIn PDF document text

Related samples 4

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_off00006457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6457 10716 bytes
SHA-256: ec4e947ec73a324cd0c63a2b26c5568f767c8e0a1b9684d5dc2800918a5a0ac0

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