Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b78d2ea21e4bbae…

MALICIOUS

PDF

43.5 KB Created: 2020-03-23 11:39:18 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-07
MD5: 62e10d6248c03c195179e998b86f2071 SHA-1: 4ce17463573acc2eaff4142c8d13a60d92680a16 SHA-256: 2b78d2ea21e4bbae80658a255a625b604e679e7c175ba65813827a96d44bcf90
96 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF document contains a large number of external links, identified as a PDF_SEO_LINK_FARM heuristic. These links likely serve to inflate search engine rankings or host malicious content. The document body contains garbled text and references to 'wkhtmltopdf', suggesting it was programmatically generated. No scripts were extracted from this sample.

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://befreetherapy.com/uploads/1/3/0/3/130323332/130323332.html#masa+atomica+promedio+del+cobre PDF link annotation
    • http://smsbennett.com/uploads/1/3/0/5/130538841/noxeninagonamam-kexasav-betij.pdfIn PDF document text
    • http://myjourneyracing.com/uploads/1/3/0/4/130483413/wugodur.pdfIn PDF document text
    • http://rowdyroysrockets.com/uploads/1/3/0/5/130546457/343facc502371.pdfIn PDF document text
    • http://teamunusual.com/uploads/1/3/0/2/130270826/ledumasedilebe-mitefi-kulawizivibuwe.pdfIn PDF document text
    • http://mlj-law.com/uploads/1/3/0/5/130588779/0596c1462.pdfIn PDF document text
    • http://www.safermanutenzioni.it/uploads/1/3/0/8/130874318/duvesojolelu.pdfIn PDF document text
    • http://tieronetechsolutions.com/uploads/1/3/0/5/130551155/e4579149cb.pdfIn PDF document text
    • http://ironelectricinc.com/uploads/1/3/0/5/130588676/8be3e1f4a.pdfIn PDF document text
    • http://www.dustcommand.com/uploads/1/3/0/6/130640236/bevodujalizurix.pdfIn PDF document text
    • http://iron2ironholdings.com/uploads/1/3/0/6/130622005/335a90d6.pdfIn PDF document text
    • http://sunscar.net/uploads/1/3/0/5/130588230/a44661497081e.pdfIn PDF document text
    • http://eportfoliooftynararoberts.com/uploads/1/3/0/6/130639888/2113688.pdfIn PDF document text
    • http://americanponyassociation.com/uploads/1/3/0/7/130775727/zuxupevarinile_rizej_mitugukebu_sigupidu.pdfIn PDF document text
    • http://mail.dejanacubrilovic.com.au/uploads/1/3/0/5/130550938/1342709.pdfIn PDF document text
    • http://cajunfiya.com/uploads/1/3/0/6/130639147/nimejamivukamuk-fejuriw-rifamodawowubuk.pdfIn PDF document text
    • http://webmail.thogersenfamilyfarm.com/uploads/1/3/0/9/130970006/xunobewogo-zumugerugokep-gitelid-xujote.pdfIn PDF document text
    • http://fiddleonthefarm.com/uploads/1/3/0/7/130740082/773802.pdfIn PDF document text
    • http://seriouslysassy.net/uploads/1/3/0/3/130323146/dadibupexutegan-dizogopogufizu-fopupimirimeli.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
🗂 Part of campaign: hersheypetfood.com 4 samples

Related samples 2

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_off00007ff1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF1 8576 bytes
SHA-256: 7c2ab3b3354b366d7ed6be7e941925f455906c95cc3b2f779f6c58e504e881ed

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