Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bb8f73effe0f4d7…

MALICIOUS

PDF

40.7 KB Created: 2020-09-11 03:48:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c5f5cfb445410253f57f6573bbba845 SHA-1: c9b772fd801a7083be0260667ac1b1c4a2e41011 SHA-256: 8bb8f73effe0f4d7d59f315c9dc2102a44d31cad166ee68a88b8aea6d32740c0
184 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 to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. One of the primary links redirects to a known malicious infrastructure at 'ttraff.me'. The document body, though heavily obfuscated, contains references to the same URLs, reinforcing the malicious intent. No scripts were extracted from this sample.

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.me/wix?keyword=jupiter+merlin+growth+factsheet In PDF document text
    • http://minixoj.sevdasfitnesstherapy.com/uploads/1/3/1/3/131378950/6e8097cf4f0685.pdfIn PDF document text
    • http://kotebeza.metzteaching.net/uploads/1/3/2/7/132710575/9115122.pdfIn PDF document text
    • http://pikiz.eliasmiller.us/uploads/1/3/1/3/131379179/5601911.pdfIn PDF document text
    • http://files.blindinggray.com/uploads/1/3/0/8/130814387/4992408.pdfIn PDF document text
    • http://gubufuw.reculturesg.com/uploads/1/3/1/3/131380600/xatigedafimaxe-pujirera-nulusu-zaxabo.pdfIn PDF document text
    • http://files.hudsonvalleygoldsmith.com/uploads/1/3/0/7/130775784/dunukijumatavog.pdfIn PDF document text
    • http://nazogigid.mxsnot.com/uploads/1/3/2/6/132681144/karipijalabavelamen.pdfIn PDF document text
    • http://zalagi.alabamafanaticon.org/uploads/1/3/2/8/132815002/3402915.pdfIn PDF document text
    • http://files.trilliumwildedibles.com/uploads/1/3/1/8/131871499/ranimiguzilovo.pdfIn PDF document text
    • http://files.easecuritypatrol.com/uploads/1/3/1/3/131382134/f5668287194d.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/1/0429/5252/3929/files/62539695870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2733/1232/files/bamedovoxivuxomufezov.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/8bc2a6_55f4e6bb77df40459d4699da1de370fa.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a2e20a_f856d521acfc4630b3480fbf8cae7aa2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5c9621_3bb16ed6d5be4474adcfb05f09a94bc3.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 8

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_off00005fde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDE 5508 bytes
SHA-256: 7c6712255ed4006c2c61186c338cbb166338cc25ec9e98d93634bf47bf95e8f1
font_01_sfnt_off00007285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7285 10560 bytes
SHA-256: e5c4b588e755c30061842a66253bf1ee7e4aeb7225bb0c07bf0998488942e5c4

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