Malicious PDF — malware analysis report

Static analysis result for SHA-256 67625738477eb5c3…

MALICIOUS

PDF

153.7 KB Created: 2020-08-21 10:08:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 49dcb77aa6195317053f0db68154283a SHA-1: f92b461d6277085fa881c1c8892b2f29c28d87ce SHA-256: 67625738477eb5c37e55948a4c546189dc29f7158a6fae5ae177fb7a72930335
134 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a URL associated with SEO-based phishing lures. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains a reference to the malicious URL, suggesting an attempt to disguise a malicious redirect as a download link.

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=watchmen+comic+english In PDF document text
    • http://kotija.acct301.ehabacademy.com/uploads/1/3/0/8/130813714/bupolo.pdfIn PDF document text
    • http://files.jackofall3.com/uploads/1/3/2/6/132682585/lenibarepes.pdfIn PDF document text
    • http://riliw.brushtailphotography.com/uploads/1/3/1/6/131606289/puvuziviw.pdfIn PDF document text
    • http://files.winningtimefarm.com/uploads/1/3/1/3/131378990/9010879.pdfIn PDF document text
    • http://sesivux.kingfisher-strategy.com/uploads/1/3/2/3/132302868/9874854.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/1/0427/9861/2636/files/sickle_cell_anemia_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2072/2080/files/telibepesenux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/4487/6966/files/amazon_web_services_case_study.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3591/7473/files/naturumigir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/acca_f2_lecture_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4769/7049/files/pdf_file_converter_100_kb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65621046881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8674/9600/files/53279330071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0637/6611/files/ms_sql_blind_injection_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7328/8869/files/97693080120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7599/2728/files/dnd_5e_form_fillable_character_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9636/7511/files/dimifarofewapaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0281/4876/files/customary_law_cases.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off00020623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20623 5128 bytes
SHA-256: 12deb6cd7e82750661602d0f3e602befb1109e6a99536140f5ac2236755c2049
font_01_sfnt_off00021784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21784 13924 bytes
SHA-256: 0a60e64c53b654c1244e56f2ea02e6e5c4a2a167ada2f4738b95466e4083c8e2
font_02_sfnt_off0002440c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2440C 16120 bytes
SHA-256: 184efd0e138a9418359f6897f9ac56b5cd93cafbd57abf30711ac2aee7e18832

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