Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d4b588d9c83f36f…

MALICIOUS

PDF

53.1 KB Created: 2020-08-04 04:10:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b32b451c28574551bae5291f59047add SHA-1: d7d5ffc57e03604b5c5338a8234b589b10b11ad9 SHA-256: 7d4b588d9c83f36f69d9adffce8d98d42a4e5ac29ff79d3ce168600cec7c1dd0
194 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which point to a redirector infrastructure. The primary redirector URL is https://ttraff.cc/pify?keyword=respiratory+system+diagram+labeled+pdf, which is flagged as malicious. The document's content appears to be a lure to encourage users to click these links, likely leading to further malicious content or phishing pages. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=respiratory+system+diagram+labeled+pdf In PDF document text
    • http://files.littlebrownsuitcaseministries.org/uploads/1/3/2/6/132681392/nakamoludo.pdfIn PDF document text
    • http://files.goingtruegreen.com/uploads/1/3/0/8/130874431/maderis-kaxapupejopote.pdfIn PDF document text
    • http://files.krutschworks.com/uploads/1/3/2/6/132681325/7908049.pdfIn PDF document text
    • http://files.schwetjeproject.com/uploads/1/3/1/6/131606866/edda669c2.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/1/0429/1585/6550/files/bubaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3212/4312/files/40651455678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0188/7396/files/basurikokof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3192/0794/files/aristotle_and_dante_discover.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6281/9990/files/subnautica_blue_tablet_location.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5609/5644/files/lugojatozutadaxoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7217/6796/files/78049844315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7826/2692/files/sumemuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9032/1313/files/28106195113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4410/1544/files/38285209724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6336/2204/files/gesewukip.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
🗂 Part of campaign: andwhilewewait.org 6 samples

Related samples 6

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_off0000916b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x916B 5608 bytes
SHA-256: 6c116db02e9168db736f85c72da824c681ae1d01b7d965238978a3a3d40c18ac
font_01_sfnt_off0000a474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA474 10268 bytes
SHA-256: e0be5639be7273084cb5886f1939da74eff42792becc12c3ad6dbd39df4665b2

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