Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e4b790eddb2b82d…

MALICIOUS

PDF

64.7 KB Created: 2020-08-16 22:19:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 37f3e181d9ab4e5a00e57e9df87090a6 SHA-1: 84d130a4d6a987942f25242ca11ec63b36b6c31d SHA-256: 2e4b790eddb2b82d12b77bdcf910659b3961f14eebdfede57f5f0f437fe2edb1
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body text and embedded URLs suggest a lure related to health guidelines, likely to trick users into visiting the malicious site. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=colorectal+cancer+guidelines+australia In PDF document text
    • http://files.veronicabrucewoodward.com/uploads/1/3/1/8/131857421/dukarepe_miton.pdfIn PDF document text
    • http://bodigub.cathybinghamphotography.com/uploads/1/3/1/3/131380600/razukusa-dibofulos-mijavatuwanopo.pdfIn PDF document text
    • http://files.ashleykeine.com/uploads/1/3/1/0/131070590/komisomuj.pdfIn PDF document text
    • http://velexej.langleyvet.com/uploads/1/3/1/4/131453046/7865539.pdfIn PDF document text
    • http://xutufe.dansarofianbutin.net/uploads/1/3/2/6/132683014/wikaz-tanin-gonobes-ritabonoduwafo.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/1/0434/5433/3093/files/tefofak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5948/6626/files/tuxutoxubadikivivupesukiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9148/3041/files/tirotoxamumoperukaniweluj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kepikopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8873/1546/files/94044711588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2207/4534/files/funimenefisij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5337/5897/files/51435046713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3503/3757/files/wimubewubufapal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0709/0581/files/a_room_of_one_s_own_chapter_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/dutopubi.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_off0000c13a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC13A 5012 bytes
SHA-256: 65023177ebb04b43dda912adb2a1778f8ac8db14dd795884d4282595316e2839
font_01_sfnt_off0000d247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD247 10304 bytes
SHA-256: 03d7eae0b6864ae2f865120d2a5e15e6f34735d7a29df9936a3978a5d985fa2e

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