Malicious PDF — malware analysis report

Static analysis result for SHA-256 96ffdbea66e1e6fd…

MALICIOUS

PDF

44.9 KB Created: 2020-09-17 20:45:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 135a2892f18ec8968b6686ab4715ad8e SHA-1: 28e70e7dc360e6302a524f65735f257509c1d24c SHA-256: 96ffdbea66e1e6fd1587063734837fbfbed4954424b44180d0794ba7a73ffc5f
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'balancing and types of chemical reactions worksheet answers' and a URL that matches the one flagged by the redirector heuristic. This suggests a phishing or scam attempt to direct users to malicious 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.club/wix?keyword=balancing+and+types+of+chemical+reactions+worksheet+answers In PDF document text
    • http://narugub.mississauganation.com/uploads/1/3/0/7/130776228/684019.pdfIn PDF document text
    • http://files.carriagesatbriargate.com/uploads/1/3/0/8/130814043/lupinavenitaje.pdfIn PDF document text
    • http://files.cmclarkscenic.com/uploads/1/3/0/7/130738657/bigilegibife_legixase.pdfIn PDF document text
    • http://sivugipur.paradigmapps.com/uploads/1/3/1/6/131637483/dofevar_derunexiduxot_vemopezu_zonunetokox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4103/8229/files/gakemiva.pdfIn PDF document text
    • https://bc7312fe-5b1e-44ad-8c06-78670b7a068e.filesusr.com/ugd/bb4607_09f216c3e6a44cbd8ff272990993808e.pdf?index=trueIn PDF document text
    • https://eb4a723d-8a0e-4f84-b485-a5505225d747.filesusr.com/ugd/895bef_42e22747987b4b2bb9efa28c2065efab.pdf?index=trueIn PDF document text
    • https://d84958f8-ad2f-4874-958a-49cafecf37d9.filesusr.com/ugd/3ed902_641188b851dd4d0c996171b424eaf326.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0468/1151/2986/files/17659626431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2609/6036/files/fovoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9898/0757/files/possessive_nouns_and_adjectives_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/6189/8390/files/billboard_meaning.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000629a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x629A 5664 bytes
SHA-256: e2ad7bd03d8ec9729aa5b5f4520dc062f48bf80801f6e8d1ad17cfaf51df380c
font_01_sfnt_off000075ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75BA 9940 bytes
SHA-256: 1ba07b8ec71d3f4b545f06374b3efad074492bf5cb1ac24282c7990a0f5de878
font_02_sfnt_off000097bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97BF 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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