Malicious PDF — malware analysis report

Static analysis result for SHA-256 975b33e9f4530f84…

MALICIOUS

PDF

34.9 KB Created: 2020-08-19 13:40:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f52ad632c4e10b38e2d12a8d558877da SHA-1: 0f0ca10bc6b60ab91d9e6c205a90a1ec58a6397f SHA-256: 975b33e9f4530f8417e338b412e1deed6c02d35612ca6669c463d11590717af7
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a large number of embedded links, indicating a link farm designed to redirect users. One of the primary links points to a known malicious redirector. The document body itself is largely unreadable binary data, but the presence of the malicious URL within it confirms the intent.

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=dexter+imdb+parents+guide In PDF document text
    • http://migunobu.floridasnowicecream.com/uploads/1/3/2/6/132681824/zinuzo_wagilomikoxip_vegomefaximesi_wizevewowuzo.pdfIn PDF document text
    • http://files.sandrabekvalac.com/uploads/1/3/1/4/131437627/sigisakerujezudux.pdfIn PDF document text
    • http://files.thedailyamg.com/uploads/1/3/0/7/130776041/xesitutalefaraxovuba.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/1/0436/3301/6982/files/bendable_concrete_project.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1505/7062/files/pdf_to_word_converter_without_changing_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0462/3010/files/31788325959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6431/0425/files/66579304717.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7955/6504/files/stay_rihanna_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/76414828512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0011/0999/files/kavifuzufegaka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8612/4958/files/android_studio_gradle_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/revista_eudora_ciclo_6_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/5539/9331/files/google_maps_api_developers_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5089/9368/files/8789624086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/jajugikimora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3136/1686/files/save_file_javascript.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 7

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_off00004aed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AED 5452 bytes
SHA-256: 7ee07c10cdd5ff3651574d69061d6e02e0ec286e56ecfae570e42ac7a1bb31a5
font_01_sfnt_off00005d58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D58 9784 bytes
SHA-256: fa052a3ae3752f22c143915efafea5ad3d4687d2bc51a2853f9ce3167364613b

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