Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb288a32142e932e…

MALICIOUS

PDF

51.9 KB Created: 2020-08-15 18:40:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b70e6cd798f5f7ad265dad1a5aea441f SHA-1: 0652da97dbf6bf34e9da856c3fc57c5ad75f2378 SHA-256: cb288a32142e932ed424b8ea2b9a288543a4dfad0a6af136e9dfb6499cd32324
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, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=exercices+corrig%25C3%25A9s+atomistique+pdf', is designed to lure users to malicious infrastructure. The PDF also hosts a large number of external links, many pointing to Shopify, suggesting a link farm for SEO manipulation to distribute the 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=exercices+corrig%25C3%25A9s+atomistique+pdf In PDF document text
    • http://files.waremiddleband.com/uploads/1/3/1/4/131437295/3732400.pdfIn PDF document text
    • http://files.sweet-greetings.com/uploads/1/3/1/3/131384070/bemivenurixomumuburi.pdfIn PDF document text
    • http://files.shelleypearsonwrites.com/uploads/1/3/1/4/131438038/vunodexep.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/1/0432/7912/2587/files/iec_61131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2373/6725/files/zunijafavubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/semexipuzifemebagiliforom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6012/5080/files/fezukarozigugimomumevesiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5552/1695/files/va_form_10-_10ezr.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2310/4160/files/bunetaxofofogugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9200/1433/files/94616779989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6130/4728/files/wanefoseruma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1909/0595/files/14538099484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/29924026619.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 5

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_off00008676.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8676 5736 bytes
SHA-256: 9b25e441c741bab3c1bdcc2b363f066477a0fd380b85182218eba2d76489e5e4
font_01_sfnt_off0000999d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x999D 12404 bytes
SHA-256: cafd3ea59677dd983c446556b04d63aff83c96e3b4523d97e974453f65ff80dc

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