Malicious PDF — malware analysis report

Static analysis result for SHA-256 72f2221d41ba1a7c…

MALICIOUS

PDF

44.0 KB Created: 2020-08-21 19:05:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 12709113bf8287da838724b877924188 SHA-1: 0b859b6e2986f6b0497da7455ae50d4f48c6773e SHA-256: 72f2221d41ba1a7c0ae4386df6c6c8c0a787acf6603a2875fba11e55a2573115
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.cc) that is flagged as malicious. The document body and heuristics indicate a "free download" lure, likely intended to trick users into downloading malware or visiting phishing sites. The presence of multiple Shopify links, some confirmed benign, suggests an attempt to blend malicious links with legitimate ones.

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=firefox+esr+52+32+bit In PDF document text
    • http://wovunetum.coldcreekangus.com/uploads/1/3/1/3/131378960/0ce1c5e046527fd.pdfIn PDF document text
    • http://xuwipo.taylordesignarchitects.com/uploads/1/3/0/8/130874493/2232213.pdfIn PDF document text
    • http://files.t9corp.com/uploads/1/3/0/7/130775201/loxupazopij.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/1/0433/1264/4251/files/arduino_tutorial_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8098/8325/files/nikon_d5600_for_dummies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5592/1817/files/bojilemos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8951/6957/files/29463063658.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/6265161135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8784/7843/files/fadivuwogozewezag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8516/0857/files/jubovojaletebesineta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/9449/9489/files/le_banquier_livre.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7872/8345/files/organizational_chart_template_excel_2010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2598/9785/files/77275108318.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
🗂 Part of campaign: classicsenglishliterature.com 7 samples

Related samples 3

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_off00005aed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AED 5388 bytes
SHA-256: d45bd374c0af5911c6a0ecb84958835ec0d870e642869f75f89706b183135d46
font_01_sfnt_off00006d3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D3E 5104 bytes
SHA-256: cfa0003ec269b8e691fc2de97a21c81bdaf058dd0599db0744d6dbb5ab606e01
font_02_sfnt_off00007eba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EBA 10648 bytes
SHA-256: 60f11e395087a746a37475bebd12c8749d3a0a122c24d46d70e62a7e12da0ac9

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