Malicious PDF — malware analysis report

Static analysis result for SHA-256 3795922a65b91eac…

MALICIOUS

PDF

56.5 KB Created: 2020-03-25 05:20:36 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 36ac7f2f83e05bec00c7f1b4051078bf SHA-1: dcd9c1e00d65b08690067f99621800cdd389b891 SHA-256: 3795922a65b91eac75579457335fd652c2bdf58cf5e95811a38ae15c1096b59d
136 Risk Score

Malware Insights

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

The PDF file contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a phishing campaign designed to direct users to potentially malicious content. The ML classifier strongly supports the malicious verdict. No scripts were extracted, limiting the ability to determine specific payload delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://business-class-store-llc.net/uploads/1/3/0/5/130543757/130543757.html#tecnicas+de+pnl+para+vendas+pdf PDF link annotation
    • http://saragracemoments.com/uploads/1/3/0/3/130313360/3964342.pdfIn PDF document text
    • http://mochisprite.com/uploads/1/3/0/2/130270917/5a18c1.pdfIn PDF document text
    • http://stopandshopshow.com/uploads/1/3/0/3/130313458/3929294.pdfIn PDF document text
    • http://claudiatennyson.com/uploads/1/3/0/4/130436159/vubokopo-xadut.pdfIn PDF document text
    • http://comphysics.com/uploads/1/3/0/6/130639506/ad1815a39e7.pdfIn PDF document text
    • http://selectiveinsurancereviews.com/uploads/1/3/0/7/130775366/foxaseligewerul.pdfIn PDF document text
    • http://yorkshirestaffingsolutions.com/uploads/1/3/0/3/130379115/funel_tufopopebajixe_ziradetaveg_mafexivobivetot.pdfIn PDF document text
    • http://cdn.artisticvegan.com/uploads/1/3/0/5/130588954/7822470.pdfIn PDF document text
    • http://elegant-solutions.org/uploads/1/3/0/7/130739895/ruminag.pdfIn PDF document text
    • http://connectingcoffee.com/uploads/1/3/0/4/130483499/592eb75d.pdfIn PDF document text
    • http://donnaconlanphysiotherapistleichhardt.com/uploads/1/3/0/7/130775182/17786bc0795c97f.pdfIn PDF document text
    • http://www.drandrewlukaris.com/uploads/1/3/0/5/130547150/7100794.pdfIn PDF document text
    • http://traditionalworks.ca/uploads/1/3/0/6/130604499/juwol_fosulowebesod_banasamakopukan.pdfIn PDF document text
    • http://witchesforest.com/uploads/1/3/0/6/130639411/vuxixudibujelewa.pdfIn PDF document text
    • http://amethystambience.com/uploads/1/3/0/6/130620674/8297987.pdfIn PDF document text
    • http://libercase.com/uploads/1/3/0/2/130271165/gunolibipuxex.pdfIn PDF document text
    • http://hollymonroe.net/uploads/1/3/0/5/130544138/gemipasojebafitamexi.pdfIn PDF document text
    • http://hydepark.gd/uploads/1/3/1/1/131164462/5bff32e6ddc40.pdfIn PDF document text
    • http://neoericksonian.net/uploads/1/3/0/4/130477126/baxetixemusike.pdfIn PDF document text
    • http://summitsalesrecruiting.com/uploads/1/3/0/7/130738885/gugogoxi_teduwifolumo_nixozimebesimik.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000092c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92C4 9928 bytes
SHA-256: f607065f060f136f4c7204f6185e8cb2120211e468bd344de32d3304a56a8f63
font_01_sfnt_off0000b3b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3B8 1708 bytes
SHA-256: 83459e82cebe561b9e65dda6a09953c9e35f75e5df0fa62a624e1833cc5b8086
font_02_sfnt_off0000bc1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC1F 16376 bytes
SHA-256: 75ad5726b260fca9c3b66ca94450239fbc156c1891091fcfcfab965e4b2051b2

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