Malicious PDF — malware analysis report

Static analysis result for SHA-256 30c52d4a34b563ec…

MALICIOUS

PDF

37.4 KB Created: 2020-08-13 19:00:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a7c8d8e3ee3225867382f62b6f4d35b3 SHA-1: 72dde38bd583646168fe773e132d94cc5e2cec32 SHA-256: 30c52d4a34b563eccd5b326c40e599e7807f8d55d1e5542c62643bf52011be52
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text that appears to be a lure for downloading a PDF, specifically mentioning 'Romeu e julieta baixar pdf'. This suggests the primary goal is to redirect the user to a malicious site, likely for further exploitation or phishing.

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.com/wb?keyword=romeu%20e%20julieta%20baixar%20pdf In PDF document text
    • http://files.ezvietnamese.com/uploads/1/3/0/7/130739535/3345741.pdfIn PDF document text
    • http://files.battambangparish.org/uploads/1/3/2/6/132681002/d767baf407e6.pdfIn PDF document text
    • http://latet.fccwareham.org/uploads/1/3/0/8/130874422/6f924d25027c.pdfIn PDF document text
    • http://mesewurob.northstarcharlotte.org/uploads/1/3/2/6/132696111/593749.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/1/0436/2502/1603/files/34159848992.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4345/4102/files/podududugarelebizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1044/0862/files/lovabekabogejasadazexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4583/8239/files/88293441713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6748/7894/files/tufaluribo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7188/9815/files/protocol_in_computer_network.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7880/9768/files/psychology_books_in_urdu_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2010/6404/files/stalking_jack_the_ripper_vk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8942/8637/files/ali_baba_and_the_40_thieves_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8481/5259/files/tebidibiwozoxamidowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2392/4376/files/cornerstone_chords_d.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0180/6997/files/95267114858.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_off00005126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5126 5300 bytes
SHA-256: ccb3ac312649fdc06650f70beb95d10741ab4b9b0d5a976825921a7472ff87d0
font_01_sfnt_off0000631d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631D 11864 bytes
SHA-256: b2c3777ff36dce17c8cda6b119837bcf43611b8119c008466a26a6d3a4cda464

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