Malicious PDF — malware analysis report

Static analysis result for SHA-256 26f5e369607b5a90…

MALICIOUS

PDF

77.0 KB Created: 2022-03-31 23:44:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-19
MD5: 94607d69506294a617632ac96865d8bd SHA-1: ceeb796277f5cfe50c16b9304bdcb6a3f00434bf SHA-256: 26f5e369607b5a90f1ceeaff0d0e9b039fe03ebf4c70fc5de5e87ddabea1ae16
226 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The document body text, while seemingly innocuous, is likely a lure to encourage users to click on the numerous embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 7

  • 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.
  • Travel-support phone-number stuffing scam high SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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://bbox.ru/images/shared/file/gabegitugopisola.pdf In PDF document text
    • https://zejotagidegixop.weebly.com/uploads/1/3/4/5/134522105/ziwizizok.pdfIn PDF document text
    • http://dobermanncz.eu/files/30613306635.pdfIn PDF document text
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/7746f6d2f2ce7b192765759283df40a3/verosoxewiga.pdfIn PDF document text
    • https://rpdev.org/ckfinder/userfiles/files/90282388018.pdfIn PDF document text
    • https://nidobafimenute.weebly.com/uploads/1/3/4/5/134526671/1040791.pdfIn PDF document text
    • https://dubilovatigalis.weebly.com/uploads/1/3/4/7/134701517/sibafagepexav.pdfIn PDF document text
    • http://jobsandhi.com/uploaded_files/userfiles/files/49527237777.pdfIn PDF document text
    • https://menebunokusup.weebly.com/uploads/1/3/4/5/134588819/wasaragenodod.pdfIn PDF document text
    • https://jesisime.weebly.com/uploads/1/3/4/8/134886507/2229679.pdfIn PDF document text
    • http://wsospice.org/uploads/userfiles/file/file/dubavajeguvajemikonewefa.pdfIn PDF document text
    • https://gomimujetaveve.weebly.com/uploads/1/3/1/4/131406784/2308930.pdfIn PDF document text
    • https://bufibetotireguk.weebly.com/uploads/1/3/0/7/130739935/98f0d.pdfIn PDF document text
    • https://gunubamevozapub.weebly.com/uploads/1/3/3/9/133997290/patuxixenugijufoko.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1621ec2b4f36c2---xinamefumaruluxasizeza.pdfIn PDF document text
    • https://sesifubonimexa.weebly.com/uploads/1/3/5/3/135317238/7659320.pdfIn PDF document text
    • https://bupuxikamofimap.weebly.com/uploads/1/3/4/7/134734142/lajaxomej.pdfIn PDF document text
    • https://rupekiduwixe.weebly.com/uploads/1/3/4/7/134774185/4126526.pdfIn PDF document text
    • https://bsff.com/kcfinder/upload/files/zojuxesotegibutudob.pdfIn PDF document text
    • https://napokepuwaju.weebly.com/uploads/1/3/1/1/131164128/cff7dbdc9df01.pdfIn PDF document text
    • https://tiwedipetubed.weebly.com/uploads/1/3/2/8/132816066/zaniboxutivilezixum.pdfIn PDF document text
    • https://topodomero.weebly.com/uploads/1/3/2/6/132696018/tunix-gogufur-lezoxexiruba.pdfIn PDF document text
    • https://loheb.co.za/YmrXLWy8?keyword=how%20to%20read%20feelingsPDF link annotation
    • 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 extracted file (font_00_sfnt_off0000c901.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c901.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC901 16976 bytes
SHA-256: 450ec196744521963f189135be82f19e6b35f905b2dfbb712a683787a745ac86
font_01_sfnt_off0000f591.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF591 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010da8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DA8 10608 bytes
SHA-256: 0be9dcee2973a640231dc3404392fdb572f4ce59bffa16c8a4e030c0efe5b868