Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b78430fd43eda69…

MALICIOUS

PDF

59.3 KB Created: 2020-08-23 02:57:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7e3873a0a2a3688c9a227fbdff840e01 SHA-1: 43f9799ff59148c2bfdfbe7fba83f0e394c7c02d SHA-256: 3b78430fd43eda691b14f8d29a7453773df3bdd3e341cab3d8c2963921329e6c
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body, though heavily obfuscated, contains references to the redirector URL and appears to be designed to mimic educational content to entice clicks. The primary attack vector is likely social engineering via a malicious link, leading to further compromise.

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=nuclear+chemistry+chapter+test+a+answers In PDF document text
    • http://files.rmackson.com/uploads/1/3/1/4/131453188/sugazimako_woxemowijezod_lowowe_bataxalaledo.pdfIn PDF document text
    • http://mikotona.ecopdx.com/uploads/1/3/2/6/132681352/xobemexer.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/1/0429/7408/5279/files/79408569362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3164/8661/files/credit_risk_management_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7188/9817/files/xuxuxefafajamora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0950/6471/files/alien_skin_bokeh_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/95648706482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1517/5335/files/12239527261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7709/9935/files/biriyani_movie_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5706/0769/files/veseborulovetobul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/3889/2186/files/ministry_of_sound_clubbers_guide_2003.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3191/9783/files/86222060507.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/4419/2675/files/borderlands_3_pc_performance_optimization.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1688/7192/files/printing_press_company_profile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3269/1363/files/16141290105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9164/8929/files/lakomawarolavomidorese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4326/6458/files/xefepused.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 4

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_off0000a883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA883 5336 bytes
SHA-256: f71b43b8237b9985565abca7fe83287388391cf4c90f094c94a73ecab5292a5f
font_01_sfnt_off0000ba9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA9D 10964 bytes
SHA-256: bac641ae40267ca7e752cbb664765ee0aa9605f6bbce33175057d122b4b7dead

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