Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7b0ae9afc02923…

MALICIOUS

PDF

34.6 KB Created: 2020-09-16 19:33:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 012b1eaffb4ba28709b046f6d26836ee SHA-1: a102b99a2a9a0aa30688e0854ee6b4cbea1ea4df SHA-256: cd7b0ae9afc0292362f47a55311de79444678bb7adcc35a1b0d08dea61b6b679
184 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to potentially malicious domains. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a 'eureka central vacuum manual', which is likely a pretext for directing users to malicious content. 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.me/wix?keyword=eureka+central+vacuum+manual In PDF document text
    • http://pokutobe.tattyb.com/uploads/1/3/1/3/131384380/6823571.pdfIn PDF document text
    • http://files.northernbeachescleanupcrew.com/uploads/1/3/0/7/130739450/1b928af2.pdfIn PDF document text
    • http://pepusa.improvementscientist.com/uploads/1/3/1/3/131383914/e79425d31210d.pdfIn PDF document text
    • http://dijaj.alexandrakwilson.co.uk/uploads/1/3/0/7/130775583/9739368.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/1/0432/2269/6096/files/27719860775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6815/2216/files/dlab_study_guide_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2520/9256/files/bilerag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8317/3798/files/avengers_civil_war_movie_full.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2541/6860/files/xezinevafik.pdfIn PDF document text
    • https://c4a34fbb-5d77-4fe3-a741-292f96b52d27.filesusr.com/ugd/dec231_8f74ed49e31b4ecb887b6529c9d4ca92.pdf?index=trueIn PDF document text
    • https://924354a2-4426-4f7b-9d0e-8a07c2925972.filesusr.com/ugd/769f78_7ac40ba14e294aa1b9441675c5d53eb9.pdf?index=trueIn PDF document text
    • https://e5a37d09-329a-4172-8953-7090a636644c.filesusr.com/ugd/237bf7_3fca4f9a04394e12b7c3f35c862eb1f8.pdf?index=trueIn PDF document text
    • https://37bd66b5-067a-4567-8449-a802aacdf08d.filesusr.com/ugd/bdc04d_6535f230dea54bf2ab8fa3c41982cddb.pdf?index=trueIn PDF document text
    • https://b5f99370-bada-4ba5-bbcb-378c4d4dfa36.filesusr.com/ugd/b56239_feb40729ad654318bbf15fec45bff121.pdf?index=trueIn 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_off00004a3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A3A 4848 bytes
SHA-256: 07182b99e381e39e30cae344714587b5abc55c96bf9f78b2f78be446e37eab0e
font_01_sfnt_off00005ab0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB0 10256 bytes
SHA-256: 6e6d15ea7c40501c4a971841406de5a94894499e4647648b0ae1520054bc4bac

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