Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6828b1a4177d41f…

MALICIOUS

PDF

70.0 KB Created: 2020-08-15 12:37:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f2673ddb719bd4a3e9b43a5fe6a9dcc SHA-1: 7368313259b984ca88105b31eee2f7b2c105e6e0 SHA-256: f6828b1a4177d41f3a69ed854c4f2f7fd03f8f1bf149e463a26d7fd1fc8a1d57
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify, and one critical link redirects to a known malicious infrastructure. The document body, though heavily obfuscated, contains the string 'https://ttraff.cc/pify?keyword=amphotericin+b+structure', indicating a likely attempt to redirect the user to malicious content. No scripts were extracted from this sample.

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=amphotericin+b+structure In PDF document text
    • http://rerog.ritzwinterhop.com/uploads/1/3/1/3/131383483/zavur-vedegazorudap-sasatokixu.pdfIn PDF document text
    • http://files.lesliemcgeaghhypnosis.com/uploads/1/3/1/4/131453255/5735024.pdfIn PDF document text
    • http://files.innisfailtemple.com/uploads/1/3/0/7/130740530/7c6b7bce7fe9.pdfIn PDF document text
    • http://files.cthsurgery.com/uploads/1/3/0/7/130739084/guvarulesan.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/1/0428/7240/6179/files/fbla_middle_level_competitive_events_study_guides.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0765/4563/files/63826753243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/6565103434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8787/9580/files/86723065891.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9370/4350/files/blutv_indir_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1384/0793/files/cacerola_de_mar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7508/3169/files/76975443150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/2634/6147/files/list_of_car_makes_and_models_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9637/9297/files/calculus_of_several_variables_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9721/1551/files/ferevom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/lazisuvotomixilasur.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB283 5060 bytes
SHA-256: 524f1025c23326edc5bada76fef7d788be6d138762ce011f1702d862e3df08bb
font_01_sfnt_off0000c38f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC38F 15812 bytes
SHA-256: 2d1e01b57cef62d6470cb75ca50088a680ff0e794be21062c8010d328df73ede
font_02_sfnt_off0000f57c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF57C 16160 bytes
SHA-256: f80b9f84d6ea16074f67da7a904ab41e14e5a44612b81a97f195d72f9bd2a496

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