Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f99ff7f949232c5…

MALICIOUS

PDF

44.6 KB Created: 2020-08-21 21:29:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8adba0418a7d7d535cd7119d8fa0acd1 SHA-1: 7357aacfd7e42acb9371b5077e7931a83ddde56b SHA-256: 1f99ff7f949232c543e75c606981c247e92f7e3f077247e8fa8ad7547fa0bf94
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF file contains numerous links, with one critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains text referencing 'Kaspersky antivirus with crack' and the malicious URL 'https://ttraff.cc/pify?keyword=kaspersky+antivirus++with+crack'. This suggests a social engineering attack aiming to trick users into downloading potentially harmful software or visiting malicious sites.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=kaspersky+antivirus++with+crack In PDF document text
    • http://files.alexandracarlson.org/uploads/1/3/1/8/131857117/vakigi-lesorir-jeziwet-voxigiwere.pdfIn PDF document text
    • http://files.revdanielgregoire.com/uploads/1/3/1/3/131398145/dakodeb_vivaxezafeperoz.pdfIn PDF document text
    • http://levoxala.advancedtechpac.com/uploads/1/3/1/4/131483200/mepiziselu.pdfIn PDF document text
    • http://files.mckinneyinternational.org/uploads/1/3/2/7/132740498/fevutawip.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/1/0439/3749/7243/files/caledonian_sleeper_timetable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/3032/7975/files/80203797226.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9679/1456/files/998277825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3181/2504/files/47515596038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4897/6032/files/38952064387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3533/6616/files/gumibaxurexaler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6676/9051/files/zuwategelibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/pradhan_mantri_awas_yojana_surat_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/laxefasigapabaxirasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1816/5144/files/the_crucible_hysteria_blame_chart_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4949/9289/files/detective_books.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_off00006ec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EC3 5276 bytes
SHA-256: db19df8d50001f292cebb5de4396baf5a93427ad118e1bca3b73864081cadc73
font_01_sfnt_off000080c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80C9 10608 bytes
SHA-256: a4262f8f1551f0f6b728267b6046461b03bbeddc71b103af844f25011a3a3248

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