Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb6d5947d76e67b3…

MALICIOUS

PDF

40.6 KB Created: 2020-08-09 09:04:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f61800fecc5482d6648896edb36fa7e2 SHA-1: 924e604d981b644aebd3388f570ba1684ce39087 SHA-256: fb6d5947d76e67b3ce3bd87ec1bcf9d48407102aae65595f49b429f074306183
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lead users to malicious content. The document body and embedded links suggest a lure related to 'low voltage transformer pdf' and various ebook titles, likely to trick users into clicking the malicious link. The ML classifier also strongly indicated maliciousness.

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=low+voltage+transformer+pdf In PDF document text
    • http://files.audubonparkchurch.com/uploads/1/3/2/6/132682787/jasamijopixubonuko.pdfIn PDF document text
    • http://files.jumanamoon.com/uploads/1/3/0/7/130775652/7666072.pdfIn PDF document text
    • http://mudowetux.illustrationpad.com/uploads/1/3/2/6/132680813/7590775.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/1/0437/6110/7105/files/beating_the_street_ebook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5830/6965/files/97645131950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/lobasewove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8405/3669/files/alfa_laval_separator_instruction_manual.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/1/0431/9143/5422/files/xifepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8573/9685/files/bending_moment_diagram_and_shear_force_diagram_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0411/6637/files/42531079007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3847/4397/files/89637777421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2008/2590/files/bavojudifotokodab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0865/4492/files/supercritical_boiler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5698/8317/files/ejercicios_aerbicos_definicion.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_off00005ff7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF7 5452 bytes
SHA-256: 41ed213b45751849964e7aafacdc3b2b2941520b1e6fa5ef64ae371eb419b60b
font_01_sfnt_off0000728c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x728C 10260 bytes
SHA-256: 7e7466c2899624b2f87576b3fd4584ea76a0e7684505b65a6c9439bbb194b870

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