Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a2187620b84947d…

MALICIOUS

PDF

72.0 KB Created: 2020-08-04 14:42:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2e71af74309067474159066052d6d6ca SHA-1: bc53a55a4b6e5dc1990a47fb45e16c21680d1e3c SHA-256: 5a2187620b84947d719966b72c238b394b5fd75d7af0b639c90d0fcbabd4fde9
194 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic identifying it as a link farm and a malicious redirector. The primary malicious URL, https://ttraff.cc/pify?keyword=angiosperm+plants+pdf, is directly embedded and likely serves as the initial lure. The document body, though heavily obfuscated, contains text related to "Angiosperm plants pdf" and references wkhtmltopdf, suggesting a content-generation tool was used to create the malicious PDF. The ML classifier strongly indicates 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.cc/pify?keyword=angiosperm+plants+pdf In PDF document text
    • http://files.forhisreign.org/uploads/1/3/1/6/131606186/vupeborewexare-zaxuwilim-mesobobesi.pdfIn PDF document text
    • http://files.aliahjan.co.nz/uploads/1/3/1/4/131452949/zubub.pdfIn PDF document text
    • http://files.life-modusoperandi.com/uploads/1/3/1/8/131856032/febibidadamatatu.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/1/0428/1116/2790/files/harold_jacobs_geometry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2521/1296/files/armstrong_furnace_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/capsim_finance_tips.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2510/4028/files/16357710640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61259485886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2040/2337/files/basic_java_interview_questions_and_answers_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3196/2535/files/68540493891.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/virginia_dmv_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3481/files/92029405246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0140/4830/files/95195540048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1641/3607/files/11236436558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/kazawuwogafalumet.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_off0000dc39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC39 5348 bytes
SHA-256: 07705acc9ec4e0b02be2025d3999318c134af667accfb170803ffac6921b53b1
font_01_sfnt_off0000ee59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE59 10840 bytes
SHA-256: 4f9455052b560cc4d5cbc07f44fd22688b971596ed8fdab871255ce515c90aef

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