Malicious PDF — malware analysis report

Static analysis result for SHA-256 493966cf6a38c9a9…

MALICIOUS

PDF

47.8 KB Created: 2020-03-25 07:26:55 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 93417c4ad91d23c8ffa82eff7fc4d517 SHA-1: f65a6de7138beb096a73bf5dc6acac9495107efb SHA-256: 493966cf6a38c9a9294926357482a0bb9741f4e2769f5045861355a725809620
136 Risk Score

Malware Insights

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

The PDF document contains a heuristic firing for a link farm, embedding numerous external links to other PDF files. One of these links, http://antiviruseprotectserviceonline.site/uploads/1/3/0/6/130620687/130620687.html#how+to+charge+the+shark+navigator+freestyle, is directly present in the document body. This suggests a social engineering attempt to direct the user to malicious content hosted on external sites.

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://antiviruseprotectserviceonline.site/uploads/1/3/0/6/130620687/130620687.html#how+to+charge+the+shark+navigator+freestyle PDF link annotation
    • http://www.gleeaquadragons.com/uploads/1/3/0/8/130874162/zoxedaguwuwu.pdfIn PDF document text
    • http://staffordchamberofcommerce.com/uploads/1/3/0/5/130588924/30b88ffd.pdfIn PDF document text
    • http://gadia.info/uploads/1/3/0/7/130738956/litelene_duvujarajiweg.pdfIn PDF document text
    • http://www.cardiffhomedesign.com/uploads/1/3/0/5/130590457/janinuvired.pdfIn PDF document text
    • http://desatascossantceloni.net/uploads/1/3/0/6/130620529/jopeka-tuludupe-fojusuresagaf.pdfIn PDF document text
    • http://passhachrit.shop/uploads/1/3/0/5/130588977/c101067.pdfIn PDF document text
    • http://mrryanmuller.com/uploads/1/3/0/4/130476469/4700326.pdfIn PDF document text
    • http://ateliermarcantoine.com/uploads/1/3/0/4/130488493/4977582.pdfIn PDF document text
    • http://eslnaples.com/uploads/1/3/0/3/130313176/3312790.pdfIn PDF document text
    • http://michaelmartel.com/uploads/1/3/0/5/130551704/d4b6f743ba940.pdfIn PDF document text
    • http://mysticalrockny.com/uploads/1/3/0/8/130814341/junepexupulimutiv.pdfIn PDF document text
    • http://www.zoom-formation.fr/uploads/1/3/0/6/130604470/7009715.pdfIn PDF document text
    • http://bellamayphotography.com/uploads/1/3/0/7/130738921/09873480b6.pdfIn PDF document text
    • http://mythbay.com/uploads/1/3/0/6/130620464/xixibodanebaneluzem.pdfIn PDF document text
    • http://concertsbythecreek.com/uploads/1/3/0/6/130620194/3354120.pdfIn PDF document text
    • http://wiki.essco.ca/uploads/1/3/0/6/130620366/85c3dceb.pdfIn PDF document text
    • http://mail.uspaeast.com/uploads/1/3/0/8/130874521/ruvifawefug.pdfIn PDF document text
    • http://churchilltailors.com/uploads/1/3/0/4/130476075/zejemimoliwo-fabamadugepuma-poxirife.pdfIn PDF document text
    • http://nowator.eu/uploads/1/3/0/4/130476743/bee3b.pdfIn PDF document text
    • http://friscocoupons.com/uploads/1/3/0/6/130604934/pugotomumap.pdfIn PDF document text
    • http://nailsbymargaret.com/uploads/1/3/0/6/130639446/2840712.pdfIn PDF document text
    • http://ucfifc.com/uploads/1/3/0/6/130639624/9654330.pdfIn PDF document text
    • http://hannahmlindsey.com/uploads/1/3/0/7/130775053/f3f6af80f6f1b.pdfIn PDF document text
    • http://oceanviewlotuvita.com/uploads/1/3/0/6/130640218/9611958.pdfIn PDF document text
    • http://love-self-discovery.com/uploads/1/3/0/7/130776492/9279289.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008840.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8840 8044 bytes
SHA-256: 6219a210f341bbf5ad7269028268f527021e09d3be4c85269d94c971559975c6
font_01_sfnt_off0000a79c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA79C 2616 bytes
SHA-256: d907c570f1f8f2d62f38d7529dbf77de46ca3a1917ec53aca7a78bae59874b04