Malicious PDF — malware analysis report

Static analysis result for SHA-256 92cb39c713706ef2…

MALICIOUS

PDF

39.9 KB Created: 2020-08-21 11:13:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9248eae7f7e5a10c0263a52175376a2f SHA-1: 05e808e1197509394bf84334b61910a09483c22c SHA-256: 92cb39c713706ef2b3b2e1eaf36238573fef5c80a8f0485af09114f1dfa36ede
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content through seemingly benign documents.

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=hemzone+gamestart+mouse+manual In PDF document text
    • http://gogotabi.cpfcanada.com/uploads/1/3/0/8/130874276/renemuzesetotujive.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/1/0434/9470/3270/files/bose_soundbar_300_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7876/9045/files/esl_reading_comprehension_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8133/4933/files/behavioral_chain_analysis_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1628/9447/files/98568321809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8640/5022/files/77504656190.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9167/9639/files/apple_boot_camp_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1275/8426/files/homographs_worksheets_5th_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/65112012192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3058/4213/files/english_bangla_translation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/5520/2723/files/wallpaper_girl_without_face.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9436/7644/files/libro_automatizacin_industrial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6240/1947/files/44451185573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8557/5832/files/24647148075.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005335.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5335 2952 bytes
SHA-256: e211f2d6e0d1bf1fd17bd5150bc2724fb7c0f1d37b1c69b855d9dcad8de34ab0
font_01_sfnt_off00005dc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC3 5016 bytes
SHA-256: 2c53c3254efcf5bae19195eb167fcc325c5edf4eb61cf83f23f5ed6d49af0459
font_02_sfnt_off00006ec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EC3 10436 bytes
SHA-256: 782f404082702d581596098b6bac1224fe09cc9a0139b91b3e3eb547e44e5660

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