Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b6dc5bc2cd28839…

MALICIOUS

PDF

35.7 KB Created: 2020-08-18 13:49:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e67cecdd520ecc3dc857bec2a035cff5 SHA-1: bc4bebff06afd3f4e182ea216dd6baa84d828a50 SHA-256: 5b6dc5bc2cd28839474502bc49c86c4f6108736abf8a9f7ef50ef933f58e67ef
194 Risk Score

Malware Insights

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

This PDF document contains a link farm designed to appear as legitimate sheet music, but it redirects to a malicious URL. The ML classifier strongly indicated maliciousness, and the PDF structure suggests it's part of a phishing or scam campaign. The embedded URLs are the primary indicators of malicious activity.

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=adiemus+satb+sheet+music+pdf In PDF document text
    • http://kisibuk.segwaystationcyprus.com/uploads/1/3/0/8/130874254/pinozizuvofutojaj.pdfIn PDF document text
    • http://files.coxevolab.org/uploads/1/3/1/3/131380733/b435077a189.pdfIn PDF document text
    • http://files.maptecit.co.uk/uploads/1/3/0/7/130740184/vuboravevox-ladusikigunebaj.pdfIn PDF document text
    • http://files.rainbowfarmsmaine.com/uploads/1/3/0/8/130874115/49c4912e.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/1/0435/7970/3451/files/96867327764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4047/2229/files/god_bhairava_photo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nisexabidubukov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0120/8232/files/ruet_admission_circular_2019-_20.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73930450062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2327/7973/files/teacher_day_speech_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0835/2679/files/36030891245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2394/8183/files/11495250508.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2155/7147/files/diy_blacksmith_forge.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_off00004d2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D2B 5396 bytes
SHA-256: d0a2f0cd50a7e38607f17070febaab5713b9eef64caa8610ac2fb8a325fed21e
font_01_sfnt_off00005f52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F52 10240 bytes
SHA-256: 1974e6a301996b61bdd4c0e1f93d4b1d82fa089c61009951c585b091a4d10422

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