Malicious PDF — malware analysis report

Static analysis result for SHA-256 550b91447f559480…

MALICIOUS

PDF

41.6 KB Created: 2020-08-21 14:55:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d975c6beb8c7ffd5d581a6938fa1798e SHA-1: dd5af3f7276d8a526dc4309caead9bd86c72f20c SHA-256: 550b91447f5594805e7a5dcc13d72fee50bd54fd8d725328613f6d812373b71a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged as malicious by an ML classifier and contains a link to a known malicious redirector. It also features a large number of embedded links, many pointing to external PDF files, suggesting a link farm or SEO manipulation tactic. The document body contains garbled text but includes the URL that triggered the malicious redirector heuristic, indicating a potential lure or redirection mechanism. 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=vmas+2019+missy+elliott+alyson+stoner+performance In PDF document text
    • http://files.myoride.com/uploads/1/3/2/6/132681026/segoxosiwoni.pdfIn PDF document text
    • http://xezixari.soul-serenity.co.uk/uploads/1/3/1/3/131381521/3626455.pdfIn PDF document text
    • http://sukeg.sabrinamarasigan.com/uploads/1/3/2/6/132682883/50777790862.pdfIn PDF document text
    • http://musewafuj.coastalcruisetravel.com/uploads/1/3/0/7/130776031/3561138.pdfIn PDF document text
    • http://files.beapaige.co.uk/uploads/1/3/0/9/130969430/732713.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/1/0441/0834/9592/files/zewurozun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7217/4745/files/finuvozujis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0700/7127/files/truncated_cone_template_calculator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4259/5239/files/vawaburugof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4795/2292/files/24221737786.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3427/1126/files/31674178568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5005/7373/files/ap_literature_practice_exam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6955/3305/files/kaguxuzujimewapufumaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/gavapoguzinojurodir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9170/3448/files/33176907774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/rikoligozojiziro.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 6

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_off000063aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63AA 5708 bytes
SHA-256: 3cd400bff34b281644e4d6e4e330eeb13dbcea5a833e3f1ce4d73be71acb35a1
font_01_sfnt_off00007703.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7703 10104 bytes
SHA-256: 5acdd4d67d96c85917142384685dd7f521a34125be764f2fbf8b2ee5845548f8

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