Malicious PDF — malware analysis report

Static analysis result for SHA-256 84dc6a62e014efdf…

MALICIOUS

PDF

39.5 KB Created: 2020-08-11 08:15:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c820f4874ca3089ba8aead08028b54b6 SHA-1: 5d8c371e64725ebee3b203e4d3ecaf09686204c1 SHA-256: 84dc6a62e014efdf2502aea984d14a4ccfea1f4ec04fedf91a6e1e3eb68e6347
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a primary redirector identified as https://ttraff.ru/pify?keyword=sheet+metal+gauge+size+chart+pdf. This redirector is associated with known malicious infrastructure and is used to lure users to potentially harmful content, disguised as a document. The ML classifier strongly supports the malicious nature of this PDF.

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.ru/pify?keyword=sheet+metal+gauge+size+chart+pdf In PDF document text
    • http://gixubag.themanchesterscoop.com/uploads/1/3/0/8/130814124/pojopuvat-zabelalutaxaj.pdfIn PDF document text
    • http://desom.mrdugalmusic.com/uploads/1/3/1/0/131070450/f7794b270.pdfIn PDF document text
    • http://kitigasiw.aleafintheforest.com/uploads/1/3/0/9/130969723/947591.pdfIn PDF document text
    • http://nidarem.nursinghomeneglectatty.com/uploads/1/3/1/6/131607163/5921005.pdfIn PDF document text
    • http://mifaro.eaglecreekwinery.com/uploads/1/3/0/8/130814535/posofamoz.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/1/0436/4979/4213/files/63332803116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5593/8720/files/lusokolakanulafawuju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7708/4070/files/zirepoxinivatawisibepaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/67038893729.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65788935473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3340/2266/files/67613534548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0258/5500/files/fasawarosigexunemuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1678/0951/files/96506454209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6828/4316/files/yung_joc-_hustlenomics.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 2

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_off00005b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B04 5724 bytes
SHA-256: a942d485fdd511b4abeaea53da178db96a25bf9c92268f40cee40d06628a3500
font_01_sfnt_off00006e62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E62 10136 bytes
SHA-256: 78069e8b032d150a574ab4b072aaf8f64f1a53b7b67fafe53488595785b0a2f9

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