Malicious PDF — malware analysis report

Static analysis result for SHA-256 8933f80c56128c25…

MALICIOUS

PDF

40.8 KB Created: 2020-08-14 10:50:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 238d7bfbc5306de38933d4ae92475c5f SHA-1: a50902a4bc4f71834b2ec4343b93d081539bca57 SHA-256: 8933f80c56128c250f2c237143408594c72d50ac77dd7f479fd45d70a4162c8a
162 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector, designed to trick users into downloading potentially malicious files. The document body and embedded links suggest a lure for free software downloads, specifically Chromecast, which is a common tactic for phishing or malware distribution. The ML classifier strongly indicates maliciousness, and the presence of a redirector URL confirms the intent to lead users to harmful content.

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=chromecast++pc+free+windows+10 In PDF document text
    • http://files.tickettoridegreatloop.com/uploads/1/3/0/8/130813860/e4101b0b03d3de.pdfIn PDF document text
    • http://files.grundmeyerleadersearch.com/uploads/1/3/1/6/131636990/sifixoj_jutixepipi_bevasagipaxuja_sivosukisozi.pdfIn PDF document text
    • http://nejeki.vitodorazio.com/uploads/1/3/0/7/130775169/be621d7ada.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/1/0427/5326/1724/files/tawusurenewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6803/1143/files/57235011803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8351/3494/files/google_chrome_for_linux_centos_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8487/3879/files/91342965846.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6856/3351/files/14425641391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1525/5710/files/benim_hocam_tarih_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7346/1669/files/46844067531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/yamata_sewing_machine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/kapigago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/1840/7335/files/algebra_2_textbook_california.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7272/4897/files/21561415095.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_off00006093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6093 5552 bytes
SHA-256: f687ba311c02d3493859b8aab5dc810eafc3f677a34f86f61e70562ae309f7c5
font_01_sfnt_off00007361.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7361 10328 bytes
SHA-256: 31716f5a3af280d40f8cde82960c2a8e468ecbc52787fbec580b200a1a2a7f4f

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