Malicious PDF — malware analysis report

Static analysis result for SHA-256 523746480563777e…

MALICIOUS

PDF

45.8 KB Created: 2020-08-20 19:54:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4c1f9312c687e16e4e34f9bf45189b0 SHA-1: d77352ccbc1b8b86bed2d924a9e43d9890d51a43 SHA-256: 523746480563777eff4a9f933824ad3df0886030a5fb4086a4feb40a3913a75b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link that redirects to a malicious URL, disguised with text suggesting it's a download for video editing software. This is further supported by heuristics indicating a malicious redirector link and a link farm. The ML classifier also strongly flagged this PDF as malicious. The primary IOC is the malicious redirector URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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 https://ttraff.cc/pify?keyword=video+editing+software+free+mac In PDF document text
    • http://files.arizonafiberartsretreat.com/uploads/1/3/1/8/131871727/5654098.pdfIn PDF document text
    • http://bajubo.yvonnedubourdieu.ca/uploads/1/3/2/6/132683014/kosotajojulamar.pdfIn PDF document text
    • http://liwovigan.sueinvenice.com/uploads/1/3/2/6/132681482/4425094.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3953/8851/files/reruterupodunojeraliz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5082/6919/files/kansas_city_hourly_weather_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87463685859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7092/2652/files/vegimunolifevof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7005/4805/files/nomezovanuweluvumagaxugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/38577057314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/electronic_structure_of_carbon_nanotubes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/4827/5863/files/cement_forming_boards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5139/2922/files/ars_poetica_macleish.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/mewofowakid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/betting_strategy.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000744d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x744D 5364 bytes
SHA-256: 727c5035df8e61752769e7925c345c826ce73b037b40570bbcd24a014d3c269e
font_01_sfnt_off0000868d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x868D 10516 bytes
SHA-256: 09c65d35402e1600546050eb2a8e24fa3f0c924b460f7c10e5c2389dcb8ca5b3

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