Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ed37a84c25f224e…

MALICIOUS

PDF

43.6 KB Created: 2020-08-17 01:10:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f425dc1844b37fd5a3a91fb1595d659e SHA-1: 0d89e51043b0e0207d77fcdefb37777a476598d8 SHA-256: 8ed37a84c25f224eacf09c9bd7ce9820a65e9dee7e0c0e7267310487d42f5cf5
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=ads+b+flight+tracker'. Additionally, the PDF is flagged as a link farm, containing numerous external links, many of which are to benign Shopify domains but also includes several unknown domains. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains the malicious URL and several other PDF links, suggesting a lure to external content.

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=ads+b+flight+tracker In PDF document text
    • http://files.lanebackland.com/uploads/1/3/1/3/131398145/jibalowetuvukin-vogadidepo-nelefetifujugeg-tezovotoki.pdfIn PDF document text
    • http://files.moellermasel.com/uploads/1/3/1/6/131606762/2739717.pdfIn PDF document text
    • http://gogomudo.johnashcroftandcompany.com/uploads/1/3/0/8/130814526/c6a823c457ae.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/1/0429/9276/3039/files/writing_academic_english_third_edition_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6970/9217/files/animoji_and_memoji_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/53805383730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9671/7977/files/fopelavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5387/5357/files/rifofurarulagami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3082/1529/files/8343251971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9575/2864/files/20739689435.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4507/7671/files/baldur_s_gate_descent_into_avernus_the_trove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8476/6620/files/nujesidabulaxojaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3209/2573/files/dejefaluwuribom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2180/2404/files/myers_psychology_9th_edition.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 3

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_off00006c6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6A 5476 bytes
SHA-256: 7c8e35e7139854c60dafa3faeffc3477cb4154014fad73aa98e908eeb6026118
font_01_sfnt_off00007efc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EFC 10304 bytes
SHA-256: 00de79ee27ca8291b5e58db6590df060369d6ee1fb5c1857ade482ba4ffbd115

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