Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b334bbacbe5b210…

MALICIOUS

PDF

43.2 KB Created: 2020-08-19 09:00:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a6fb6c4d9c704ba1e78c90a8dcdf241d SHA-1: 207b6519c7c58021bb8d11c8c226560da2182198 SHA-256: 5b334bbacbe5b210f270e61985fb40fac1383b1c7b6f5054a744494c504a4e18
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body itself contains a URL that appears to be part of this redirection chain. The ML classifier strongly supports the malicious nature of this PDF, suggesting it's designed to lead users to harmful sites.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=openerp+8++for+windows In PDF document text
    • http://wixelilug.cityofgracemobile.org/uploads/1/3/0/7/130776445/vufibaneve.pdfIn PDF document text
    • http://files.at1space.com/uploads/1/3/1/4/131438353/a70d0c9ff2459.pdfIn PDF document text
    • http://files.skinboostlab.org/uploads/1/3/1/4/131406592/fewevevazalibo_borenitu_lawurawemus_digakajerarirej.pdfIn PDF document text
    • http://telufav.washingtonmidwives.org/uploads/1/3/1/4/131453134/1136413.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/1/0430/7573/1616/files/83752496175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/dexokem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3765/5191/files/bf-_888s_frequencies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3311/6315/files/64942220812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65587220918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3545/7696/files/jizamagekosofiteris.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5808/6559/files/zojojusumirafusom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/58673921793.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2341/6987/files/replace_belt_proform_treadmill.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_off00006b7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7C 5104 bytes
SHA-256: 3352e036cd9bca0fc3e90972e7cc6383017191d885a458cabfb4119dfb2143dd
font_01_sfnt_off00007cfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CFC 10400 bytes
SHA-256: 3953270e8fe2607d59bd48f6b00ba2879e15ffa5153eb8826a014d623dac55fa

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