Malicious PDF — malware analysis report

Static analysis result for SHA-256 b99a4277562639a6…

MALICIOUS

PDF

49.2 KB Created: 2020-07-28 17:42:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a242f9781f88f3e88b32eabe6c91a5ba SHA-1: c3a6b5382af4f1e36983ca7befdb168c9f0d2ba1 SHA-256: b99a4277562639a6aee216c55c8a1f5ac472cbcd98a123983c45c7f81937ab45
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One critical heuristic firing indicates a direct link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a movie trailer, likely serving as a lure. No scripts were extracted from this sample.

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=cloak+and+dagger+trailer+freeform In PDF document text
    • http://files.greatcommissionalliance.org/uploads/1/3/1/4/131453276/0e58ed5ab19d4b.pdfIn PDF document text
    • http://files.mrsgalaviz.com/uploads/1/3/2/6/132682829/debukomepemulitaziko.pdfIn PDF document text
    • http://files.adventuresav.com/uploads/1/3/1/4/131453215/6070745.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/1/0432/3858/8584/files/dosuvowasedowavivowuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8114/5243/files/sutateruziwif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0733/6867/files/57353305741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0781/9422/files/53258971226.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7512/5923/files/luganuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4780083199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1329/7560/files/xogadexewemuzulefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5135/1200/files/94061361776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8216/2084/files/banolegizemexuxitupibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8606/1480/files/wikerorise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7435/5351/files/wewuduvolax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/61521813323.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75FD 4924 bytes
SHA-256: 5fbb7c99ad252f5c94044ced81ba8b999848a4300977498791c593fcb79ca9ff
font_01_sfnt_off000086a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86A2 1980 bytes
SHA-256: f07396c068e05de770a7f8f7f0fc38e08509c08a061cc770ca71c83bdf8b7d7d
font_02_sfnt_off00008ff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FF9 11080 bytes
SHA-256: 268b207a272ad33181c5d84903b768c708391d6d97d3fcdae5246e4148096bd9

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