Malicious PDF — malware analysis report

Static analysis result for SHA-256 23726d1fe277316c…

MALICIOUS

PDF

44.4 KB Created: 2020-08-22 23:21:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e06831e0df25f658ff5bc597f13665d1 SHA-1: 003a47bb39240757d98408e9349f9df4a574386c SHA-256: 23726d1fe277316c703d11344876a032aa7cd99310447bfe0496410fcf6c1c1a
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, with one identified as a malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves a link farm designed to redirect users to potentially harmful sites, masquerading as legitimate resources. No scripts were extracted, limiting the analysis of direct payload delivery.

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=entrepreneurship+education+pdf In PDF document text
    • http://files.abilenecares.org/uploads/1/3/2/6/132695782/xirime_sunakox_fikop_xalunoxipifokim.pdfIn PDF document text
    • http://files.salentoby5.com/uploads/1/3/2/6/132695242/bibaxasize.pdfIn PDF document text
    • http://werari.exoticsuede.com/uploads/1/3/2/6/132682347/1807560.pdfIn PDF document text
    • http://zuwen.allthingshemp510.com/uploads/1/3/1/6/131606248/a0b36137e37.pdfIn PDF document text
    • http://files.artworkbyangie.com/uploads/1/3/1/6/131606782/siwigot-xovagofos-jijomixe-ditoregopixixuk.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/1/0429/8044/2271/files/awards_and_honors_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5543/0309/files/tigokaxulazesekogamawiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/gekafirepolewan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1512/7708/files/wawijaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3183/0421/files/football_game_information_in_marathi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0165/1101/files/10007082967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7880/9755/files/8970902140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24810932871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2647/2347/files/74224387333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6896/2469/files/26343034943.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_off00006f6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6E 5168 bytes
SHA-256: ffc46a2a96264d4627797b74ce63fdca1aec99e03ac6b125404e122f58c8b8d6
font_01_sfnt_off000080f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80F4 10420 bytes
SHA-256: 4491bdeecdaa5d6e131356b7b62f0951f5ccb61156b11b246d2416a81e7b11b1

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