Malicious PDF — malware analysis report

Static analysis result for SHA-256 62a6150b1a9f7cfe…

MALICIOUS

PDF

36.5 KB Created: 2020-08-16 12:10:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f843e2aa28c8e2b91eea3192b5f8e21 SHA-1: 1d113ebd650a7aa42c5a4bb35e52954942b7eeaf SHA-256: 62a6150b1a9f7cfedf249de948abd867635b34ef60aaa1c45f462bb4043b210b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a malicious URL, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The document body, though partially corrupted, contains text suggesting a lure related to an "escape room" puzzle, which is then linked to the malicious redirector. The ML classifier also strongly indicated 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.ru/pify?keyword=escape+room+2+level+9+answer In PDF document text
    • http://files.mega-marine.co/uploads/1/3/1/0/131070238/dopofoj.pdfIn PDF document text
    • http://files.covetedgreenhat.com/uploads/1/3/2/7/132740547/1530192.pdfIn PDF document text
    • http://gabenopel.gbwgrassseed.com/uploads/1/3/2/6/132681886/2440852.pdfIn PDF document text
    • http://sinowab.palmcayami.com/uploads/1/3/1/4/131453133/254dfae1425.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/1/0432/5280/9888/files/bufiwipemiluwipudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/97238754230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8488/1827/files/luzeloxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4206/1986/files/24801172778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5794/6522/files/48864691720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3251/8555/files/branches_of_science_and_their_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3201/0152/files/60290622312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6259/9586/files/88532125558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5048/4390/files/coordinate_picture_graphing_easy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1987/7024/files/wiwubupewalunifozajajojev.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_off00005119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5119 5476 bytes
SHA-256: 4f6ae57c9b25b2db5a23118bc0683a4336b8100fead1e153d9f4c46ee8055fcc
font_01_sfnt_off000063b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B5 9860 bytes
SHA-256: 496302eea663a06764e2b2be096a87c1c96a5564a2b0dc62f4cecc1f88dc9867

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