Malicious PDF — malware analysis report

Static analysis result for SHA-256 497b13d492bf620f…

MALICIOUS

PDF

44.7 KB Created: 2020-07-28 06:02:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1fc9e8613c70f146b01f8da7bb3db65a SHA-1: a042eadeab4d3abbb49cf84f628695975978b04b SHA-256: 497b13d492bf620f479cd6ac57f9e0beb4674d717c84c941ea1de27d3523e03d
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. Additionally, another critical heuristic identified a PDF link farm, suggesting a coordinated effort to distribute malicious content. The ML classifier also strongly flagged this PDF as malicious. The embedded URL points to 'ttraff.com', a known malicious redirector.

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=sliding+menu+right+side+android In PDF document text
    • http://files.marozniashop.com/uploads/1/3/0/8/130873893/fakimumi.pdfIn PDF document text
    • http://files.mintmarktogo.com/uploads/1/3/0/8/130874276/3656673.pdfIn PDF document text
    • http://files.thecarissafoundation.org/uploads/1/3/1/6/131636642/588d59f1b.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/1/0431/8996/0865/files/15341938255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5187/5481/files/konerulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2884/8538/files/sutowasibuzepajavuvanukin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1065/3338/files/kozetabawikuwasekula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6838/3641/files/75758847410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/boxupesadaba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7675/5349/files/lozivumokul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7096/3350/files/50207206331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/76280160341.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9302/5183/files/vofuno.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_off00006766.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6766 5224 bytes
SHA-256: 1dcb78a663bc31572f230adb59b8798e70fab9e84575161084ef602ebaf09814
font_01_sfnt_off000078e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78E7 14196 bytes
SHA-256: ac6e4bbbc5dfc569243048976087882a526f2237e7bb2b549cc67893287fa027

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