Malicious PDF — malware analysis report

Static analysis result for SHA-256 d40adc0410400f18…

MALICIOUS

PDF

38.9 KB Created: 2020-07-08 18:53:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ab749d642c7690516d91067a22b8c18a SHA-1: 52fedfe9069b7474020db94113e887d5b675bdde SHA-256: d40adc0410400f189588608bb7ab4cfecafcfebe83624a9f3e483678337c8a60
184 Risk Score

Malware Insights

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

The PDF contains a deceptive title and a large number of embedded links, indicating a link farm or phishing attempt. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a link to a known malicious redirector, and PDF_SEO_LINK_FARM indicates a mass of external PDF links. The ML classifier also strongly flagged this document as malicious. The primary intent appears to be directing users to malicious or deceptive websites.

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.cc/wb?keyword=insert%20pdf%20pages%20as%20powerpoint%20slides In PDF document text
    • http://files.kocanada-usa.com/uploads/1/3/1/4/131437538/zorodoke.pdfIn PDF document text
    • http://files.dorchestercuboree.com/uploads/1/3/0/7/130775497/b7230cbf7bec.pdfIn PDF document text
    • http://files.boerboeluk.com/uploads/1/3/1/8/131860787/kidimadezunebuloraro.pdfIn PDF document text
    • http://files.whitewavemedical.com/uploads/1/3/0/8/130873876/9711318.pdfIn PDF document text
    • http://files.michaelchekhovcanada.com/uploads/1/3/1/4/131453036/87460ba.pdfIn PDF document text
    • http://files.biophysical-ecology.com/uploads/1/3/1/4/131406356/xivut_girusidusowele_finusagon.pdfIn PDF document text
    • http://files.balloontwistersdcvamd.com/uploads/1/3/0/9/130969375/gipagazovupibiz_tolokaduwimola.pdfIn PDF document text
    • http://files.mydecorandgiftrep.com/uploads/1/3/2/8/132814261/9777006.pdfIn PDF document text
    • http://files.callylawson.co.uk/uploads/1/3/1/4/131408930/dogubi.pdfIn PDF document text
    • http://files.northcountrysuggieshop.com/uploads/1/3/1/3/131383510/197328.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://niwomivo981194636.files.wordpress.com/2020/06/sakefuwoviwuz.pdfIn PDF document text
    • https://zisiwemebix.files.wordpress.com/2020/07/wejufujomesere.pdfIn PDF document text
    • https://sifodupaw191158614.files.wordpress.com/2020/07/41525456999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wajumibuxup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/titigabibuzumazavuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gevuruliwineda.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_off00005d0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0B 5024 bytes
SHA-256: d571994ded8b3fb0c0ec752e75e455e0d8d83e53fd8837789ae1c0148fc06db0
font_01_sfnt_off00006e37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E37 9556 bytes
SHA-256: ea13d69a32277508aa55381e8b6896e07e154163b76bb8042cdb13db7b99e19b

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