Malicious PDF — malware analysis report

Static analysis result for SHA-256 746dc5381519076f…

MALICIOUS

PDF

44.9 KB Created: 2020-08-06 23:07:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8653760799094923f2081407700595c7 SHA-1: d6ce54e754c1d2c460d5f1e0e7aba16dc37e60e7 SHA-256: 746dc5381519076f3eb3846a2a836f7693b2956fed7c8a53e01d0cb1f045e48f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure. This suggests the document is designed to lead users to malicious infrastructure, likely for further exploitation or phishing. The ML classifier strongly supports the malicious verdict.

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.ru/pify?keyword=swot+analysis+ppt+pdf In PDF document text
    • http://files.uhsmini-thon.com/uploads/1/3/1/4/131410818/8559398.pdfIn PDF document text
    • http://files.leaannlewis.net/uploads/1/3/0/7/130775362/7185956.pdfIn PDF document text
    • http://files.joshuaspringsschools.com/uploads/1/3/0/8/130874598/gowitexerenoniw_nixuruta_muduboju.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/1/0429/8234/2815/files/albinismo_tipos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4293/9814/files/31469175440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4302/7106/files/19417815280.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7810/6779/files/scp_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86662201832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/75761602004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/segefoxur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9453/1493/files/kti_askep_bronkopneumonia_pada_anak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4066/7810/files/dammit_blink_182_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2550/6208/files/rivodana.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_off00007248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7248 5236 bytes
SHA-256: 3771fe99034945ed2b329a035c23d1dd656aa6ad7cf6d21ec6247e859811a5ed
font_01_sfnt_off0000844c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x844C 10092 bytes
SHA-256: d4e18c2989b7a15a35a40308609faf5811025e2dc2990b0917945afa38981794

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