Malicious PDF — malware analysis report

Static analysis result for SHA-256 77b0179fe4f93f9b…

MALICIOUS

PDF

53.6 KB Created: 2020-08-19 12:46:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9d13bb2bb42cf7a65eb04d4a7d83b298 SHA-1: fe4979cc1faca79b03ee9d315f1940b236637787 SHA-256: 77b0179fe4f93f9bdf8a1601ec8f7f0a42c06573f99f4845ef7c7bbaafda1bb1
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a redirector to known malicious infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=amman+songs+audio+free', which is also flagged as a malicious redirector. This suggests the PDF is part of a link farm designed to funnel users to malicious sites, likely for phishing or malware delivery.

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=amman+songs+audio+free In PDF document text
    • http://files.rumanhamdani.com/uploads/1/3/1/4/131438423/nipezakidex-mosekuxexu.pdfIn PDF document text
    • http://files.raananahikers.com/uploads/1/3/1/4/131407067/dekejamewow-vawovipufib.pdfIn PDF document text
    • http://files.mountainview.gasconline.net/uploads/1/3/1/4/131406149/10b794b2b4ce.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/1/0434/3654/0056/files/wedepusesedaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4411/8428/files/analog_and_digital_measuring_instruments.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6634/3072/files/repawitapuwegorapod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/desumubepuve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2834/8056/files/boleva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8472/4889/files/89257589538.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2767/7852/files/wafozowedukiliv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1878/8774/files/kanedapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5159/5429/files/reproduo_angiospermas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7630/4544/files/nomeliramefamifejuwopoleg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2586/6662/files/84481070269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1052/2277/files/41156018367.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_off00008e74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E74 5184 bytes
SHA-256: 10cbe762deb8d5251baa323890bfe4b8780a791304ae130de48d41c6700f643d
font_01_sfnt_off00009ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FF5 13144 bytes
SHA-256: 58acc3840a88f2a31a36ca6ab9fe4ccca2a1ac9c21d7eb272559557fffa655a4

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