Malicious PDF — malware analysis report

Static analysis result for SHA-256 11d0137dd8db9670…

MALICIOUS

PDF

41.7 KB Created: 2020-03-24 06:42:47 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: e930d9ba29598b9b89c54d16f8f2d1f7 SHA-1: 42a07767f3ff5de03100c3e11e16b14570564bd7 SHA-256: 11d0137dd8db9670beed04e9c691bbf9f96a5dda7a7fbcc51e74799fd2fe7859
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting a malicious intent to manipulate search engine results or redirect users to potentially harmful content. The embedded content, though appearing as a document title, is likely a lure. No scripts were extracted, but the presence of numerous external URLs points towards a phishing or content-distribution scheme.

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://rikrecruitment.com/uploads/1/3/0/7/130740533/130740533.html#schaum%27s+outline+of+abstract+algebra+pdf
    • http://roadtripkit.com/uploads/1/3/0/4/130483673/setuxazuzobonasi.pdf
    • http://rammefix.no/uploads/1/3/0/5/130589270/1802428.pdf
    • http://www.danvillearthritiscenter.com/uploads/1/3/0/5/130550742/tanopurinerigopofojo.pdf
    • http://seedhybridchecker.com/uploads/1/3/0/5/130588282/7345109.pdf
    • http://www.sportsperformancerevolution.com/uploads/1/3/0/4/130483286/korakusojul_xorodulapida.pdf
    • http://thepostalpaper.com/uploads/1/3/0/6/130639922/welotomum.pdf
    • http://pop.vanheerde.org/uploads/1/3/0/6/130639396/mutefixeli.pdf
    • http://julianahilton.com/uploads/1/3/0/5/130590461/f7c4c.pdf
    • http://guaumind.com/uploads/1/3/0/7/130775984/f7ea167cf.pdf
    • http://herdingpixels.com/uploads/1/3/0/5/130543262/aa50a2812.pdf
    • http://teamusaapparel.com/uploads/1/3/0/4/130436222/6be530a89bdd9c.pdf
    • http://chichomeinterior.com/uploads/1/3/0/3/130379094/tafiwogufumapop_kebad_rabore_gikagajesaj.pdf
    • http://hotdudeswithdogs.net/uploads/1/3/0/6/130620964/2800587.pdf
    • http://samuelmickelson.ca/uploads/1/3/0/5/130543394/3901412.pdf
    • http://danishvillagekringle.com/uploads/1/3/0/8/130874394/2572eee670.pdf
    • http://www.northerndriveschool.com/uploads/1/3/0/5/130550693/91974.pdf
    • http://atllearntodancesandysprings.com/uploads/1/3/0/3/130379711/f309b.pdf
    • http://www.carolinescandlecompany.com/uploads/1/3/0/5/130550714/xakubojekatugefi.pdf
    • http://algaebookandpaper.com/uploads/1/3/0/4/130476586/gujumepixoredibebo.pdf
    • http://kingbyfriday.com/uploads/1/3/1/1/131163931/5787727.pdf
    • http://www.nuditosytrapitos.com/uploads/1/3/0/6/130639641/sutemenazila-lomerorawawez-xulorifojumi-jeziwaso.pdf
    • http://katjanisart.com/uploads/1/3/0/4/130491418/9821916.pdf
    • http://55a212942p12rb.com/uploads/1/3/0/4/130476912/wiwuvawo-jadulobazug-bugefefovi.pdf
    • http://mail.telegraphhillart.com/uploads/1/3/0/5/130590279/midubodomadu-jenubalimiza-jevadezagojuven-sowarep.pdf
    • http://spectrumcbdsupplements.com/uploads/1/3/0/2/130287269/mazuzonulut_diponewovogoda_pizugava.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_off00007b5b.bin
9b00741489b348b999d3f8170aeb0bfacc909b7f403735330c24f082e4efd96d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B5B 7492 bytes

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