Malicious PDF — malware analysis report

Static analysis result for SHA-256 41b445625c122460…

MALICIOUS

PDF

44.4 KB Created: 2020-08-21 12:22:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 29ccd3fc77476c289d1ac9bb480e28b2 SHA-1: 7c58dc51674a0a8acf54da88389d54bb2d75f474 SHA-256: 41b445625c1224602149fc1bf0a8c6c28f3c4159f44c4aabed9b7d79b6643c59
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, contains text related to a 'dining table size guide' and embedded URLs, suggesting a lure to trick users into clicking the malicious link. The ML classifier also strongly flagged this PDF as malicious.

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.com/pify?keyword=dining+table+size+guide In PDF document text
    • http://xizijosa.natevehealth.com/uploads/1/3/1/0/131071252/4844635.pdfIn PDF document text
    • http://files.dianastoic.com/uploads/1/3/1/4/131437636/1784592.pdfIn PDF document text
    • http://files.snapzphotobooth.co.uk/uploads/1/3/1/4/131413040/xusavewumuxa.pdfIn PDF document text
    • http://ruzavet.hopecounselors.com/uploads/1/3/2/3/132303382/2466027.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/1/0431/6866/1670/files/judavup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ropuxikasafomudixaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0700/7127/files/vudirozodaxodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40545468116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2559/6573/files/heavy_fleece_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9164/8929/files/zemipesakedogusutaborimed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/gulabikozuja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2387/5746/files/bobinage_transformateur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5180/0981/files/kipaferakarijuvavevuwiv.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_off000071be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71BE 5084 bytes
SHA-256: aebc6c016e4b56ab492394f9d49ea00f8fa7a49f931c757c1a328e02fba8366a
font_01_sfnt_off0000831d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x831D 10036 bytes
SHA-256: fa251786cd1c3350d58aff95bc95e55a5ff6120a3a69929912761963ab9db3d4

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