Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f343bad2ba96f0b…

MALICIOUS

PDF

42.2 KB Created: 2020-08-17 03:50:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a89b544d2c6ed4135f2c6d525c3fb0ed SHA-1: e7c45ea789d6b8dec23f301cd5c8b96d1c7e3abe SHA-256: 7f343bad2ba96f0bfec52f9e040ebe1dcfd72ae9187c2eaf74e5e1cfc22f2031
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one pointing to a known malicious redirector infrastructure. The document body and heuristics indicate a lure for a 'beep sound ringtone' which likely leads to a phishing or malware download site. The presence of numerous links suggests an attempt to create a link farm for SEO manipulation, potentially to distribute malicious 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.ru/pify?keyword=beep+sound+ringtone In PDF document text
    • http://files.linensandlacefabrics.com/uploads/1/3/0/8/130874309/totivajuxuguw_goxujodakejido_kiromizip_razexija.pdfIn PDF document text
    • http://fojixejel.wpbluebirdfestival.org/uploads/1/3/1/3/131383332/nuroxerepojufifexu.pdfIn PDF document text
    • http://files.ourcrazyratadventure.com/uploads/1/3/1/6/131606280/f0a14.pdfIn PDF document text
    • http://fezuse.conniemorey.com/uploads/1/3/1/6/131606490/kabujivexej-panobokena-musaradezusuf.pdfIn PDF document text
    • http://files.dzabahe.com/uploads/1/3/1/1/131163684/8622296.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/1/0438/5426/6533/files/gunuxinofofeniza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3994/7932/files/lipolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0673/0144/files/gukametafunaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/101_algebra_problems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3511/3110/files/australia_visa_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/0951/0297/files/miracles_happen_brian_weiss_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0958/4802/files/86781313303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/94454440617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/91711436580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2507/1256/files/nefidufared.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61411835552.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_off000067be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67BE 4932 bytes
SHA-256: f9c48ec99203094a8dbb2850a43e99c05e986c07ba090c10dfbb0b3c1a96d1e5
font_01_sfnt_off00007893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7893 10392 bytes
SHA-256: 4b82bc8b70f939899570d2a33986fac6a5fda61a8029e987912a67437f10dab7

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