Malicious PDF — malware analysis report

Static analysis result for SHA-256 29a1b9c8028a9baa…

MALICIOUS

PDF

43.6 KB Created: 2020-08-01 04:33:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 12d5228121ecc658217a4ed13669c847 SHA-1: a9aa5a7c4e058c0dc946e0c563820ccfb7e9cfee SHA-256: 29a1b9c8028a9baa24a2d92ea6b8d34771f109d3328bd1b63d8f58d92c0c9dfa
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.cc/wb?keyword=making%20bar%20graph%20worksheets%204th%20grade. The ML classifier also strongly indicated maliciousness. The document body, though corrupted, contains references to the malicious URL and benign-looking PDF filenames, suggesting a lure to disguise the malicious intent.

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/wb?keyword=making%20bar%20graph%20worksheets%204th%20grade In PDF document text
    • http://files.taniamansfield.com/uploads/1/3/1/8/131871488/9260629.pdfIn PDF document text
    • http://files.21stcenturyfarm.com/uploads/1/3/2/6/132696171/zenoz-pemolegolumozef.pdfIn PDF document text
    • http://files.come2faith.net/uploads/1/3/0/9/130969545/tavip-rugifudidebutir-baxupiguxom-sikuwujaraxun.pdfIn PDF document text
    • http://files.coupadvantageportal.com/uploads/1/3/0/8/130874403/tafixu.pdfIn PDF document text
    • http://files.richardellishair.co.uk/uploads/1/3/1/4/131437513/9046421.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/1/0431/8904/3358/files/jepuxisuwefinegopibulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/80325559338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5649/6791/files/96735644193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0523/8688/files/99733445690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0625/2440/files/the_nexus_minecraft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/nixiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/17227608912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5557/0341/files/xajadap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1385/7692/files/9507854250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7542/6722/files/vexudironerufaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9252/4702/files/kizapufoxuw.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 8

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_off00006c1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C1C 5576 bytes
SHA-256: b8a2f9ad6404f1841d52e899a2900eec058c9192995a3e70d7cd205d9423419f
font_01_sfnt_off00007f2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F2C 10024 bytes
SHA-256: c2bf28e38b33f84100a63deba0797e2c486caa93eecc12b5fb721283c1b1169f

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