Malicious PDF — malware analysis report

Static analysis result for SHA-256 424a949ac1209824…

MALICIOUS

PDF

54.5 KB Created: 2020-07-31 17:34:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a8853668418087827f13176dd4ba7b0d SHA-1: d7953e01f312c65b953efdf9d69d2ba678ac704a SHA-256: 424a949ac12098245668765e91ae5e35befba795ebf59d4ec56c88229337386d
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 lead users to further malicious content. The document also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be luring the user to click the malicious link.

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=insertion+sort+java In PDF document text
    • http://files.raycraighead.com/uploads/1/3/2/7/132740214/melumasuwuvewodigug.pdfIn PDF document text
    • http://files.mrsbrownsmusicroom.com/uploads/1/3/1/3/131379833/4808061.pdfIn PDF document text
    • http://files.haralsoncountyhistory.com/uploads/1/3/2/3/132302913/4438840.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/1/0432/7315/8806/files/nelomanube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8309/5459/files/18253437228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9003/5366/files/56632143184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/40655015222.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4164/3928/files/16197098258.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7699/3695/files/pififemesav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0923/5353/files/femes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6970/9217/files/buvunivopuxupifakovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9862/8501/files/48764370493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2821/8010/files/novizupudujivovuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sejil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2692/3172/files/nijubexe.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000b3d6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xB3D6 17204 bytes
SHA-256: 11a2d1fd0f2ba376780b27414018abc9cee2c40b2906e8ac807894f66d6e3c3d
font_00_sfnt_off00007c9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C9E 4720 bytes
SHA-256: bd715cac4d4057d0263d6c5286b5d4bc073aeeeef6a60fcf9e4e25ba2bfa5a9d
font_01_sfnt_off00008cbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CBB 11384 bytes
SHA-256: 1589a859347e4f89283d90bc93a1f9f65190b523c9c15b9aafcc595ed25e1df4

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