Malicious PDF — malware analysis report

Static analysis result for SHA-256 7824f4275a8fd074…

MALICIOUS

PDF

50.1 KB Created: 2020-08-06 21:01:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8873b77a50c67ba32aee5c0be29397cb SHA-1: 28b2242b3016ba4af0e4cfe825a42d5502d229ac SHA-256: 7824f4275a8fd0742b633993e90c5f7a7c52043cac4fd4ae7389554dfa081e13
194 Risk Score

Malware Insights

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

This PDF file contains numerous links designed to create a link farm, with a primary redirector pointing to a malicious URL. The ML classifier strongly indicates maliciousness. The embedded URL and the document body, though heavily obfuscated, contain the malicious redirector URL, suggesting an attempt to lead the user to a phishing or malware distribution site.

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.ru/pify?keyword=acupuncture+points+combinations+pdf In PDF document text
    • http://files.beckerbelieveit.com/uploads/1/3/1/6/131606291/0707d0f6ffe.pdfIn PDF document text
    • http://files.kennethzinkl.com/uploads/1/3/0/8/130873941/5560329.pdfIn PDF document text
    • http://files.funktionalglassworks.com/uploads/1/3/1/4/131406295/31c9ef.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/1/0428/9937/4233/files/pasazibinegawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8697/8984/files/27172846003.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4521/5656/files/49519918484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9168/0666/files/26702366713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/gisejanele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tufajotojitumawudawemir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6382/6849/files/71033963951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3319/8745/files/72244912022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54729765263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65105912314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2103/1832/files/xaxowijutefodeserux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1607/5939/files/53301968125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3980/9959/files/arterial_blood_gas_interpretation_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7573/1607/files/57969803681.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_off0000862d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x862D 5396 bytes
SHA-256: ff51010cd30de83afc9f0e8bfd9de118149756d1d36a0106c8086ca1a25a93d3
font_01_sfnt_off00009870.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9870 10032 bytes
SHA-256: 43725a1859270fee25589f248668c2f8b8b6e854b309b1f3fe83948b48399eae

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