Malicious PDF — malware analysis report

Static analysis result for SHA-256 42f85bd546aaaa17…

MALICIOUS

PDF

39.0 KB Created: 2020-08-13 03:23:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6d6120929e7d623cfca35cd03caf6f05 SHA-1: bacb7ad1f5e2f944b44a8e50c975de4cda62c873 SHA-256: 42f85bd546aaaa17bd9e4b6db666b6171ee2d8aab96f85a0e287a6deacd43fe4
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains a reference to the malicious URL. The presence of a "download button" heuristic further suggests a lure to trick the user into clicking the malicious link. The primary malicious IOC is the redirector URL, which likely leads to further stages of an attack.

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=sensors+actuators+and+interface+electronics+pdf In PDF document text
    • http://files.projectufo.org/uploads/1/3/0/7/130739381/4877757.pdfIn PDF document text
    • http://dutarebed.grandmaraislions.com/uploads/1/3/0/9/130969360/010132.pdfIn PDF document text
    • http://fimev.newjerseyspineandwellness.com/uploads/1/3/1/3/131380005/9613457.pdfIn PDF document text
    • http://files.mca.school/uploads/1/3/0/8/130874347/8993391.pdfIn PDF document text
    • http://files.gvai.org/uploads/1/3/1/4/131453917/dijad-kutajezogak-zomulam-bajomeriko.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/1/0437/7418/1534/files/lord_narasimha_kavacham.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2585/6669/files/81880630557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1977/9742/files/29253024879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6187/0746/files/74384229580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8068/6497/files/bujutixufuvogijefekow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2641/4749/files/87124701452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3953/8851/files/gidijabodasewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9688/3868/files/american_standard_furnace_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/10077145583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3966/0951/files/95771923708.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_off000058e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58E2 5252 bytes
SHA-256: 74ef550a880145f401b34dbe8f6de4936a683503ae86330be18d82a912efc280
font_01_sfnt_off00006ac8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC8 10856 bytes
SHA-256: 6a792570fd05d72ecf451a06fc33890b6d25ef3fe3d36bd2569f0b589e2bd10d

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