Malicious PDF — malware analysis report

Static analysis result for SHA-256 64bad87ad7199897…

MALICIOUS

PDF

88.2 KB Created: 2021-03-03 11:52:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: aff6ee4da28f74fa4b981515c910b2f5 SHA-1: 59efefda4987e4970956a69c8f6b574f958ac953 SHA-256: 64bad87ad7199897b3ead42eec783aad2eba5cfe5f73782dfb6452c06ed7997d
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of techniques used to redirect users to malicious sites, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://ponafet.ru/wix?keyword=vikings+war+of+clans+mod+apk+android+1 PDF link annotation
    • https://duxawedi.weebly.com/uploads/1/3/4/4/134477895/1299079.pdfIn PDF document text
    • https://cdn.sqhk.co/lawafopugu/DhgtlQb/11636018175.pdfIn PDF document text
    • https://gulufoge.weebly.com/uploads/1/3/0/7/130776817/pibazuk.pdfIn PDF document text
    • https://cdn.sqhk.co/kezavilageg/Xjivjfz/spirit_animal_birth_chart.pdfIn PDF document text
    • https://ziresaro.weebly.com/uploads/1/3/4/5/134509830/lubube_wawikugijug_jowiwe_jazonadi.pdfIn PDF document text
    • https://cdn.sqhk.co/rawatajizefu/jfHShjP/14125394595.pdfIn PDF document text
    • https://cdn.sqhk.co/valujoper/ficrIxH/87536607756.pdfIn PDF document text
    • https://cdn.sqhk.co/jenireni/ovoAhbP/smart_balance_wheel_price_in_kuwait.pdfIn PDF document text
    • https://jutamuxenaritul.weebly.com/uploads/1/3/1/4/131452982/828082a02.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://buxamojajowolos.rf.gd/32934819021.pdfIn PDF document text
    • http://gulesovel.epizy.com/technical_institute_website_templates.pdfIn PDF document text
    • http://litegizixusiw.rf.gd/antikvariniai_kapirovskio_dantys_mangai_free.pdfIn PDF document text
    • http://pefimubis.myartsonline.com/veg_soup_recipe_instant_pot.pdfIn PDF document text
    • http://sezajuvijib.rf.gd/ssl_certificate_from_chrome_browser.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000121cd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x121CD 27572 bytes
SHA-256: 7ff4bf62eb56ece8b54d46ef184e3e0a71dbc471e992078c9b7012317db86479
font_00_sfnt_off0000dfd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD7 2880 bytes
SHA-256: b90b109c34db9b2d961be312c0c64f13ba4f5af9c83d6ae4556a72cb7f468167
font_01_sfnt_off0000ea15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA15 5648 bytes
SHA-256: b63ba69a3d658f7312d4b10e2b0b2f3f3d1e6d6c580a02ff0993db997deb314c
font_02_sfnt_off0000fd57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD57 10576 bytes
SHA-256: f9ef30298058675c480e9c0f8094008895bd32c276d705f1478617366a3afdae

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