Malicious PDF — malware analysis report

Static analysis result for SHA-256 51faafbbc8b2da05…

MALICIOUS

PDF

39.7 KB Created: 2020-08-26 17:14:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c80a667ceffc0e6e5226698c372fdb3f SHA-1: cc99ccd61ebdb2c83e32cba175c051d39f6dec1d SHA-256: 51faafbbc8b2da0535efd4d266e18e3aacde03da7a690ee9a621ac97ab926086
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though partially corrupted, contains text related to 'island of the blue dolphins full movie 123movies' and a URL pointing to the same content, suggesting a lure to a fake streaming site. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be social engineering via a malicious link.

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.cc/pify?keyword=island+of+the+blue+dolphins+full+movie+123movies In PDF document text
    • http://sesivux.kingfisher-strategy.com/uploads/1/3/2/3/132302868/9874854.pdfIn PDF document text
    • http://files.digitalgraphictools.com/uploads/1/3/1/6/131608037/d07d14.pdfIn PDF document text
    • http://rupubok.sugarpanbakery.com/uploads/1/3/1/0/131070450/goxaxoz.pdfIn PDF document text
    • http://files.40martyrs.com/uploads/1/3/0/7/130739674/a171e.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/1/0433/6176/3480/files/54082970509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4555/1256/files/wolefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2177/0657/files/71175068453.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1582/3772/files/academic_word_list_synonyms_vietnamese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6192/7318/files/xuvotozimiti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/2554/1789/files/parallax_scrolling_template_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1863/3894/files/4047195471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9714/2936/files/zavejepop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2743/9526/files/dabutobezesini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4121/0024/files/tojerobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1997/6350/files/adjective_or_adverb_exercises_elementary.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_off00005a6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A6B 5668 bytes
SHA-256: 642290df0745bb5e4e68735fa1dbb3caafe6b64489355f78eb9fec17673bd922
font_01_sfnt_off00006d8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D8F 10608 bytes
SHA-256: a0360b8d5c60b81082f17b763a0918c05eed7e3f02e93af015f8e79367614d90

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