Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b8f547795953d07…

MALICIOUS

PDF

109.3 KB Created: 2021-05-27 09:06:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1235ef1be23f71e5fd348c6baf5560b0 SHA-1: 7c4c69f482fb32871ac3abbc61911f265a541b1c SHA-256: 7b8f547795953d078a24d23ad1aa26f4afd6eb0b814688236bd435584389382d
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or phishing operation. The primary malicious URL observed is https://ponafet.ru/strik, which is likely used to redirect users to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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/strik?utm_term=volume+and+surface+area+word+problems+answer+key PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408984/normal_601ad6aa76091.pdfIn PDF document text
    • https://gokejaxax.weebly.com/uploads/1/3/6/0/136056436/momefa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485569/normal_6047b07e69594.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412761/normal_5fe85757c10e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477623/normal_60677bebf3557.pdfIn PDF document text
    • https://duvugatezema.weebly.com/uploads/1/3/4/6/134650783/mogufawuva_muwefesejotum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408584/normal_601a11aa2f540.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449397/normal_6045be091ee07.pdfIn PDF document text
    • https://xepekozodixati.weebly.com/uploads/1/3/5/3/135346226/d45ffd8fa6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496360/normal_5fcf8790e76d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446285/normal_603669cd4c0d5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475875/normal_5ffbe014ad2e9.pdfIn PDF document text
    • https://welarozukakiwa.weebly.com/uploads/1/3/4/4/134497755/619d7bba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416666/normal_603f68130ce2b.pdfIn PDF document text
    • https://jesabison.weebly.com/uploads/1/3/4/3/134379325/96a26575.pdfIn PDF document text
    • https://gadetuzajuvi.weebly.com/uploads/1/3/4/8/134850054/pigarunaji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444092/normal_600e4c1f21601.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cb1f556-5e19-45df-886c-729060a2a744/supersonic_tv_dvd_combo_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81dbb5f6-8f6e-46b1-9f74-6e456822d88d/puxawavinibeto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff1c92ca-72f6-4e2d-aa25-e624e687133a/zodaredagagojerugigabeze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b19e442-94fc-49f5-89bd-d524ecc2ca74/wukafike.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/069bc72f-6f5b-4a8b-beef-1981149c72e9/wabowosupemipuweduge.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013581.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13581 6440 bytes
SHA-256: edf517a561ed5132c6c1d5718ac6ff9d870a00e6f43a91762fd168a2279cca75
font_01_sfnt_off00014546.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14546 3664 bytes
SHA-256: 009cc5d7cb7143c08cca283ae68cabb1f91f43d94ba816290241fa0633b4b492
font_02_sfnt_off00015152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15152 5664 bytes
SHA-256: 54160e383bf7f2e10ecb2b61e597da542dd825d9e289243b4f9e599301d3b668
font_03_sfnt_off0001649a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1649A 13932 bytes
SHA-256: a43d31875e071b90269bef20c7f43e64cb97553a0491fc8d4c6417dc934db5a6
font_04_sfnt_off000191bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x191BF 16088 bytes
SHA-256: 3c1c7bd747a9a8f6e1c531457064e9378d9a893e5271ac7381d9d0015290d8f4

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