Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f42709c8a7ba26b…

MALICIOUS

PDF

118.5 KB Created: 2020-08-04 13:22:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b6f35cad279d71d96fedfc23fc4c3e0e SHA-1: 74b144d4d1bf29210cf712771d5d970ffeaf9cbf SHA-256: 6f42709c8a7ba26b93c7e0d5125463673375355482bb366e0dc79b49b30e9bf9
194 Risk Score

Malware Insights

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

The PDF contains multiple links pointing to a redirector URL, which is indicative of a phishing or scam attempt. The heuristic firings confirm that the PDF links to known malicious redirector infrastructure and is part of a link farm, likely for SEO manipulation to lure users. 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.cc/pify?keyword=roger+olson+contra+o+calvinismo+pdf In PDF document text
    • http://files.garyfrymusic.com/uploads/1/3/0/7/130776104/784af233.pdfIn PDF document text
    • http://files.red-bean-coffee.com/uploads/1/3/0/8/130814124/3988868.pdfIn PDF document text
    • http://files.slowerlowerdelaware.com/uploads/1/3/0/9/130969404/dasifupibub-vegajojenurut.pdfIn PDF document text
    • http://files.heroinanonymous585.org/uploads/1/3/0/8/130874432/2097768.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/1/0428/9835/8432/files/23342697578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/microelectronic_circuits_6th_edition_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/xaraxotogifula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7982/6597/files/fadagekizujirejonazebutof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6450/0122/files/51105253332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3854/6840/files/zilexuvujujimixabofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rinajimakonewob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9690/7678/files/xexegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2770/1655/files/70920001738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/2056798034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9898/1030/files/jimej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1063/7475/files/mirogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0101/1614/files/24418797365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6623/6826/files/70789622270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0654/8377/files/5216321536.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_off000195c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x195C3 5540 bytes
SHA-256: 55f5bdffcc27e0009d16892375e5f6b10c2c00550f68194cc97c2c91eca96120
font_01_sfnt_off0001a89c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A89C 10220 bytes
SHA-256: 6ff579ec92b3b6e6e74923560b45ba8981c8e865667e24c79ce5730cacd6f4d2

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