Malicious PDF — malware analysis report

Static analysis result for SHA-256 829a4728a52e79fb…

MALICIOUS

PDF

41.8 KB Created: 2020-08-11 18:05:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 26f0a2ae35856277c1df123f31af5070 SHA-1: e71b0123f793d77b8dfc1afcd49c128fc4f07381 SHA-256: 829a4728a52e79fb29f328ac000d701a8fa51759cc254fac7ca256b076fcc52e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) that is flagged as malicious. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=dell+r710+specs+pdf, suggesting a phishing lure related to Dell server specifications. The presence of a link farm and a malicious redirector indicates an attempt to drive traffic to malicious infrastructure, likely for further exploitation or phishing.

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=dell+r710+specs+pdf In PDF document text
    • http://files.kevinzollman.com/uploads/1/3/1/1/131164425/kalesilixezeful.pdfIn PDF document text
    • http://files.hazelminerbook.com/uploads/1/3/1/4/131437669/c9a73350d973.pdfIn PDF document text
    • http://rekewan.beautifulnapatours.com/uploads/1/3/1/4/131406436/sesug_ziriz_xegonube.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/1/0438/0524/5597/files/pdf_text_size_editor_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4966/2117/files/83926541109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9324/5600/files/addition_coloring_pages.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2607/8101/files/96699486735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/breaking_benjamin_we_are_not_alone_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6689/2181/files/rejavivebami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86556218032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2915/7272/files/academic_english_phrases.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3459/0878/files/89224214261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/50933962407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3123/2661/files/makalah_tentang_filariasis.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 2

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_off000058ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58EE 5212 bytes
SHA-256: b2fa4ca280034a424928e3d5157bf2abc2ddc12f9bbdc834f83ee30f4d2270da
font_01_sfnt_off00006ac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC6 15776 bytes
SHA-256: 28b3e6a0d16be324888b9cb6d727ba9b13e48ffe4d3719ac2cb3a5f5882a20c0

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