Malicious PDF — malware analysis report

Static analysis result for SHA-256 204c82e5d71938a6…

MALICIOUS

PDF

51.7 KB Created: 2020-08-23 11:46:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 13a5b3b66a9293884aa20cc2205d6eab SHA-1: 38e13bcf29584d80ec4a25fb06dc022db8879918 SHA-256: 204c82e5d71938a6a99deb2e500cc3ad0676092d7cca76d1f1511bdd128cc7fe
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, the document body contains the same URL, suggesting a phishing attempt to lure users to a malicious site. The ML classifier also strongly indicated maliciousness.

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/pify?keyword=best+dance+video+song In PDF document text
    • http://pupes.toniswain.com/uploads/1/3/0/8/130873826/180013.pdfIn PDF document text
    • http://gimumu.beaurobertspianist.com/uploads/1/3/1/4/131453540/2470571.pdfIn PDF document text
    • http://kapuluna.cookiescutters.com/uploads/1/3/1/8/131871674/lojavemurokiduwifef.pdfIn PDF document text
    • http://guwijona.funom.org/uploads/1/3/1/0/131070588/2bb3876.pdfIn PDF document text
    • http://doxidepeg.stjoachimlockeford.com/uploads/1/3/1/1/131164250/wakutu.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/1/0441/2715/8424/files/the_norton_anthology_of_african_american_literature_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9100/0472/files/43054102569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9156/6493/files/poxigavijawulikamefot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8521/7436/files/bed_sheets_king_size.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/96747924378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6730/2303/files/calendario_escolar_2020_a_2020_para_imprimir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3494/3388/files/famanodewitivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3986/7559/files/katubosusemisojof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1965/5573/files/47390335016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3208/3612/files/undo_jupyter_notebook.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 1

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_off00008e08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E08 5088 bytes
SHA-256: 8c0856f485a9689784b6010384e4d60c5ab970dbe27afa11a0d74e29216a4807
font_01_sfnt_off00009f74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F74 10120 bytes
SHA-256: a7532a63b55f236857a0a2c05d6f44526590fb8a3c4f3c9a95df74af8c268c74

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