Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd3fafd103ffc358…

MALICIOUS

PDF

35.5 KB Created: 2020-08-17 04:50:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1af15b13f64225a46ab09082eca72ecb SHA-1: 7c25295a21480bbeecad3f8b977296f8e17fc338 SHA-256: fd3fafd103ffc358fec802bb4a16e0dccf332b04799bf9dd1ce6d778e519dbd5
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lure users to malicious content. The document body, though heavily obfuscated, contains the text 'Circle simultaneous equations worksheet' and the malicious URL, suggesting a social engineering lure. The presence of a link farm further indicates malicious intent to distribute harmful content.

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=circle+simultaneous+equations+worksheet In PDF document text
    • http://files.coastal-curators.com/uploads/1/3/0/7/130739238/zalikapudu_xinowodopi_vobulinupa_gulem.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/1/0434/1471/6572/files/35290748994.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7206/0573/files/kipagevasediwaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4899/files/nugupixizixarugate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6875/8943/files/52807754263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6616/2341/files/15092671525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wixet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6518/6206/files/mofemegiwevukifukubaguta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67331216746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6095/3249/files/met_opera_rush_tickets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3001/2316/files/93009133866.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4734/5573/files/zegikewulunutedebivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8154/7428/files/refefivutukakogowibipedi.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 4

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_off00004dc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DC3 5224 bytes
SHA-256: 6eb0690b6e02837cc859027d380a9315f557f1f639df30a9afa1a197ff7a250b
font_01_sfnt_off00005f62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F62 9920 bytes
SHA-256: 40bfc75b6a5805dd83098aef821094f9ea0135bed7ab270670f840688ebe9a79

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