Malicious PDF — malware analysis report

Static analysis result for SHA-256 501598c0a7b7df71…

MALICIOUS

PDF

39.9 KB Created: 2020-08-07 22:52:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9de3e58219876a116dbe569bb29cba02 SHA-1: 8ac6e19d2fa68a175bd1558a1f5c30236c3b8df1 SHA-256: 501598c0a7b7df71da32b4fb029dbaad32532f08be2d5e47c255f528a219cd52
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. The document also exhibits characteristics of a link farm, with numerous external PDF links. The primary malicious URL identified is https://ttraff.cc/wb?keyword=chiller%20troubleshooting%20pdf, which is likely intended to redirect the user to a malicious site. No scripts were extracted from this sample.

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/wb?keyword=chiller%20troubleshooting%20pdf In PDF document text
    • http://files.onyxfuneralplanning.com/uploads/1/3/1/3/131380413/pofadajigivep.pdfIn PDF document text
    • http://lukemawo.palutabulations.com/uploads/1/3/1/0/131071164/cb87eb0d06b27.pdfIn PDF document text
    • http://files.treehousehashomes.com/uploads/1/3/2/3/132303374/mekuwuzanuz_bevozupimip_kemoxezagubova_tedadosusep.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/1/0434/5485/7369/files/mibapakarugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8104/0033/files/buzavolabubuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9038/5821/files/negorisowebow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3029/0327/files/loboberesowalopid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6938/2568/files/pulizowelokobozubawiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/91573961726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1238/2117/files/zozumagawamubusodupaworix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3179/7668/files/sozixumulavurazizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2394/9224/files/7902405498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8108/8670/files/dewonez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5535/7852/files/82356333295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7727/1703/files/34893763875.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_off00005e1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1B 5140 bytes
SHA-256: fc33f76eda7825b5a780a10187fe1b9967bd100d9804f115d2f9605a75321fec
font_01_sfnt_off00006f82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F82 10444 bytes
SHA-256: 46cf9c9c8ac5119dcbc786949f465d74cea7b99d26a9a7f9a1effa3b21d0e08d

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