Malicious PDF — malware analysis report

Static analysis result for SHA-256 4928bbdb8f754d8b…

MALICIOUS

PDF

172.1 KB Created: 2020-08-13 23:55:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cf32e883286db3c0ac96606c8a310b6a SHA-1: 52a524249d0e62640bc26e12c776c567300aaef8 SHA-256: 4928bbdb8f754d8b5b5c3007274f120a8280ada72b9ba0295f5cdc91de896443
134 Risk Score

Malware Insights

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

The PDF file contains embedded links that redirect to a known malicious URL, identified as a redirector for SEO-based phishing. The document body, though heavily obfuscated, contains the same redirector URL, suggesting an attempt to lure users into clicking it. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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=bhagavad+gita+pdf++in+english In PDF document text
    • http://files.fragments-of-time.com/uploads/1/3/2/6/132695629/3916375.pdfIn PDF document text
    • http://pudumewid.sagemitigation.com/uploads/1/3/0/8/130873851/ziwolafapazarakaxu.pdfIn PDF document text
    • http://files.youngchaelee.com/uploads/1/3/0/8/130813357/5563595.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tipibag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/nipuzifijujaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9419/6902/files/bafg_antrag_formblatt_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2469/4939/files/xesimewalut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7252/0352/files/wozerozem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5644/7136/files/negative_impact_of_globalization_in_ethiopia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75901524911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/amar_ujala_full_news_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0244/5475/files/google_docs_to_iphone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3367/3380/files/33949703953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/26782780868.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002442a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2442A 5316 bytes
SHA-256: d1b6b7719003e6e0907aff25590651d895eb208ea7c7e8ffdb75332ac342b70e
font_01_sfnt_off00025649.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25649 3740 bytes
SHA-256: 6ce3ed3d0cf168fbf74d6eb321148d5efc31cda11559831b77020f7d4c9f4c8c
font_02_sfnt_off000261c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x261C4 12928 bytes
SHA-256: 051da52617ceb362c223be44ddba3e5d8d231fd2429ac5b1643672a337b614ed
font_03_sfnt_off00028a77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28A77 6672 bytes
SHA-256: 701722ebae107d9a91621069a95803084d6bd0edf0251e058be1ecf13e24ab9f

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