Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9614e5f43f554a4…

MALICIOUS

PDF

40.7 KB Created: 2020-08-10 16:44:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ff42868b131149c34ee512065b0416ae SHA-1: b879b388d348d18a8b96631c302bae2f8f8031ae SHA-256: a9614e5f43f554a41225b24d822266996481c4693f98663a54e0c498fc34e1f3
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=functional+analysis+sobolev+spaces+and+partial+differential+equations+brezis+pdf', which is likely intended to lead the user to a malicious site. The presence of numerous PDF links suggests a link farm or SEO poisoning tactic 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.cc/pify?keyword=functional+analysis+sobolev+spaces+and+partial+differential+equations+brezis+pdf In PDF document text
    • http://files.upperclementscottages.com/uploads/1/3/2/7/132712185/36bf318.pdfIn PDF document text
    • http://files.nkshoporlando.com/uploads/1/3/1/8/131856257/2552171.pdfIn PDF document text
    • http://files.sevenstarsamerica.org/uploads/1/3/1/4/131406434/a7c83.pdfIn PDF document text
    • http://files.corinellafishingclub.com/uploads/1/3/0/7/130776864/9257f22c217.pdfIn PDF document text
    • http://lesuzakev.theprismwithin.com/uploads/1/3/1/3/131380005/jafuzezovi.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/1/0433/8447/1710/files/31833297285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1961/6935/files/potorexogezibobavedaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2809/3850/files/28885120221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4903/3640/files/natajibeziritexib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7983/5547/files/xodimesedobobufigadotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9678/3514/files/pharmacology_of_antiseptics_and_disinfectants.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5509/4677/files/novus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9144/4390/files/budding_in_bacteria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7485/4812/files/ethics_case_study_with_solution_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1952/5531/files/bureaucracy_in_pakistan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0640/2453/files/53542289715.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_off00005e53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E53 5580 bytes
SHA-256: 365b0f113255368177a4da6019249407fff3dab77ae2cc7ed147bd3e9e42b8ab
font_01_sfnt_off00007166.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7166 10480 bytes
SHA-256: 942cd5aa2360b1b1f311f09e940bc836ffbe2b509c12e141efe86ca454f94759

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