Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd4e501bb5ed8fc0…

MALICIOUS

PDF

46.6 KB Created: 2020-07-29 02:23:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cebcc5bfa7035e3d1a84b3663d8f0e6f SHA-1: ba05a81cec6b8dc71a0894f6c7009c43a99fc749 SHA-256: fd4e501bb5ed8fc0a7402cf7ed08526ff6e8e13c33e1f0368ff9360d80e5d2f5
202 Risk Score

Malware Insights

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

The PDF contains multiple embedded links and a visual download button lure, directing users to a redirector URL. This redirector then points to a large number of other PDF files, suggesting a link farm or phishing campaign. The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links indicates a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=absent+leave+letter+format In PDF document text
    • http://files.fids-dance.com/uploads/1/3/1/3/131380623/josowusowiladoz_mexose_junof.pdfIn PDF document text
    • http://files.discoverdp.info/uploads/1/3/1/3/131384173/8287854.pdfIn PDF document text
    • http://files.equipasia.net/uploads/1/3/1/4/131408581/sufegifojas_junebew_jisebovaxu.pdfIn PDF document text
    • http://files.drfelixroom26.com/uploads/1/3/1/4/131453543/minubu.pdfIn PDF document text
    • http://files.shaynaleecoaching.com/uploads/1/3/0/8/130874691/7c474c332.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/1/0433/9413/8268/files/91029329962.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3174/9031/files/gomexofutuxekesim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9334/3912/files/69029292951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5393/1944/files/17662958401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5622/5688/files/96830980774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4365/1735/files/pawomowexipajoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9721/1551/files/derikijamaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0819/5738/files/juwatudimixuruwusafij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fokadexowigexavutezirero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2263/9527/files/mokozewivijito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1275/1523/files/90902625131.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 8

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_off00007aaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAA 4840 bytes
SHA-256: 7ff65d5833c00d84768936fcb11f00ad172559a255155387dafe76bdb19c97a0
font_01_sfnt_off00008b02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B02 10016 bytes
SHA-256: b042462781fc232cbecdbb488b6f3fd29ef82e089eddab05acb918890093aafa

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