Malicious PDF — malware analysis report

Static analysis result for SHA-256 81f842d6035a62d4…

MALICIOUS

PDF

44.4 KB Created: 2020-09-22 01:59:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8d80698ce78f9b625a701083cc12ae6a SHA-1: 811548f64c583120815bd2378029647dd028abdc SHA-256: 81f842d6035a62d436819d57a6ad9968d9fda7f915d2928ff53d4481bd8cfb20
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to redirector infrastructure designed to obscure the final destination. The primary redirector URL, 'https://ttraff.club/wix?keyword=william+beebe+bathysphere', is flagged as malicious. The document body, though heavily obfuscated, also contains this URL and other PDF links, suggesting a link farm or phishing lure. The ML classifier 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.club/wix?keyword=william+beebe+bathysphere In PDF document text
    • http://files.mrjbake.com/uploads/1/3/1/4/131438397/3c2a5a4fb3b.pdfIn PDF document text
    • http://mibipox.perkypelican.com/uploads/1/3/1/4/131406710/nitepavuzebugojowamo.pdfIn PDF document text
    • http://mebas.kingstimeprinting.com/uploads/1/3/2/8/132816202/powokasifono.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://325d69bf-bf16-488f-b3ee-87b772a94e13.filesusr.com/ugd/de02f3_b48125c97625475ba8549896cc941376.pdf?index=trueIn PDF document text
    • https://b28ca130-82d8-41cc-9ef3-394d6324601d.filesusr.com/ugd/451a43_78ff2e232c6849e5af8daacba4b08137.pdf?index=trueIn PDF document text
    • https://d694033e-53d8-461b-b7fd-d154181cc21d.filesusr.com/ugd/e643da_18a8d151b1964c2fa9b4b500aeb0c61f.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2399/8874/files/aromatic_and_antiaromatic_and_nonaromatic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1804/4070/files/pumafuxumewiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6166/files/android_calendar_missing_appointments.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3826/8827/files/rewiviz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2888/8227/files/variedades_de_cafe_robusta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4749/1486/files/breech_presentation_ppt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5392/4004/files/bahut_aayi_gayi_yaadein_video_song.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_off00006f73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F73 5312 bytes
SHA-256: 88121db121ae80a416891ae7c54f3f2e7cf81a421e604d70ef39328ceaada9bf
font_01_sfnt_off00008164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8164 10540 bytes
SHA-256: fa6e5d52240da307f35ac9345e4267d993c4c9e9b9cc770a4b0ad58139b71d1f

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