Malicious PDF — malware analysis report

Static analysis result for SHA-256 675d6c80e528ff76…

MALICIOUS

PDF

41.9 KB Created: 2020-08-21 07:51:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74e2f2eb737cf8bee5b1d6b6d30c6575 SHA-1: 56ff1f6dad841442bd7b46556e077bc6921d7dff SHA-256: 675d6c80e528ff76a5c51b5dc9b94a83b31da194ec980ffb2c664125bd7e62d5
194 Risk Score

Malware Insights

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

This PDF document contains a large number of links, many of which point to a redirector service. The document body text, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=brainwave+entrainment+app+android', which is also flagged by heuristics as a malicious redirector. The presence of numerous external links suggests an attempt to drive traffic to malicious or phishing sites, likely disguised as a download for a brainwave entrainment app.

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=brainwave+entrainment+app+android In PDF document text
    • http://files.nhfuneral.org/uploads/1/3/1/8/131856134/21f98aac5c3f8.pdfIn PDF document text
    • http://xiwig.lifeislikevegetables.com/uploads/1/3/0/8/130874043/3732309.pdfIn PDF document text
    • http://suxawud.7westproductions.com/uploads/1/3/0/7/130739560/302289.pdfIn PDF document text
    • http://files.keysboatdocks.com/uploads/1/3/2/7/132712015/8512c1.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/1/0433/1310/2998/files/nafevavijapulaxopopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8379/2545/files/discord_join_messages.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7506/7297/files/gepaseworu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1321/8199/files/75194912368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8773/8533/files/jiginoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5209/5898/files/tunajerulonafuxagokafusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6579/2929/files/fobip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6202/4605/files/business_meeting_agenda_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6705/6023/files/tratamiento_angina_de_pecho.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7946/2040/files/gabby_bernstein_super_attractor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1533/1227/files/37923737673.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_off00006765.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6765 5096 bytes
SHA-256: 51ab3952c6e6a40b59ab608d8326817e35e7e7eaf7a7005ae0d797c0af5c5469
font_01_sfnt_off000078b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78B4 10076 bytes
SHA-256: 3d1c052be41a0acab7dc6c173e73a1b8e407b26e064d80f350da72d6b3dd358d

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