Malicious PDF — malware analysis report

Static analysis result for SHA-256 f33e92e25742e882…

MALICIOUS

PDF

49.3 KB Created: 2020-08-12 08:33:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cb9025255a9c68539d45bda3c717e877 SHA-1: c9cb72fff8de46398d4f5ecc7efc9a90211c0453 SHA-256: f33e92e25742e882afb3cf5f1ec8b11ba70201619fc20827d840ad3dc99466f6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=calculus+iit+jee+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to a malicious site. The ML classifier strongly supports the malicious nature of this PDF.

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.cc/pify?keyword=calculus+iit+jee+pdf In PDF document text
    • http://files.awtprogresstracker.com/uploads/1/3/1/1/131164202/8810038.pdfIn PDF document text
    • http://folusulel.richmondinfo.net/uploads/1/3/1/4/131410227/169b68f.pdfIn PDF document text
    • http://webutek.robciccotelli.com/uploads/1/3/0/7/130739379/5073430.pdfIn PDF document text
    • http://files.badassoffitness.com/uploads/1/3/1/3/131379506/13af864.pdfIn PDF document text
    • http://files.cogophempstead.org/uploads/1/3/1/4/131408970/taput.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/1/0432/5477/5970/files/angels_and_airwaves_the_adventure_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6103/2598/files/setoturadogaburetijin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9861/9557/files/mebewerud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3704/6422/files/vadosumuxofijitozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/47574029277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0147/9321/files/nekonubuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2854/4668/files/libro_techos_verdes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9676/8661/files/firefox_popup_blocker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3006/8894/files/walisavopodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0813/8150/files/38916779295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2512/9894/files/mufijukagixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8152/2599/files/skyrim_character_selection_mod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0601/7186/files/mixewugedatigin.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_off000083f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83F4 5032 bytes
SHA-256: ca3b3ccee7f9ec848b5fdfe0ac7535f47d96c6be69c8183d6829bf79a18078b5
font_01_sfnt_off00009529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9529 10280 bytes
SHA-256: ceb68c06c299ee3cc92090cd2269ca044c7f81ba72b167f64210b9ec0a02348b

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