Malicious PDF — malware analysis report

Static analysis result for SHA-256 a27c6f5730ca6f0d…

MALICIOUS

PDF

79.4 KB Created: 2021-03-15 07:41:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a53b823c2b1a3380ca194bfab52ef551 SHA-1: 942b6982d62f0cc63aad1e52075786f16599068e SHA-256: a27c6f5730ca6f0d7089e639c99e7a0d656919db7dbf85b3bf265ea0236a2474
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to disposable hosting services and appear to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of external URIs and the 'link farm' heuristic suggest the document's primary purpose is to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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 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://zajinet.ru/wix?keyword=jpg+to+excel+zamzar PDF link annotation
    • https://lefizedut.weebly.com/uploads/1/3/2/6/132681647/8e7dab5f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469847/normal_5ff093d095ca9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461481/normal_602757602e907.pdfIn PDF document text
    • https://kerawidirara.weebly.com/uploads/1/3/4/7/134746453/kobuxipiwalo-musukolurego.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374013/normal_5fdd762c773e5.pdfIn PDF document text
    • http://salopkisa.website/werufapeludepetisigewow5ue0h.pdfIn PDF document text
    • https://jekaboda.weebly.com/uploads/1/3/5/3/135398795/ruxutas.pdfIn PDF document text
    • http://kazotapojiwi.mywebcommunity.org/81186668217.pdfIn PDF document text
    • http://fortuneo.biz/the_memory_string3pr5o.pdfIn PDF document text
    • http://freshmind.net/pet_rock_inventortms9r.pdfIn PDF document text
    • https://lumidenozure.weebly.com/uploads/1/3/5/3/135345408/kuzisar.pdfIn PDF document text
    • https://risogaruwakev.weebly.com/uploads/1/3/4/6/134634919/nuxomobum_zisiporo_mopudusuxara_nuzevezu.pdfIn PDF document text
    • http://xtrading.buzz/76443189772rxlgc.pdfIn PDF document text
    • https://romagazep.weebly.com/uploads/1/3/4/7/134759296/nuruxonilowigej.pdfIn PDF document text
    • https://kowezuvive.weebly.com/uploads/1/3/4/6/134603832/nuwigexuwatixa_lowasirazizaxa_jadiguwafu_fazilipurime.pdfIn PDF document text
    • http://wikowezenitezo.medianewsonline.com/19731147335.pdfIn PDF document text
    • http://kadaxejob.mypressonline.com/adding_decimals_horizontal_worksheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491936/normal_602fc69ce1fd3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/3e534cfd-cbbc-4a94-b01c-31b44cdab882/is_girlboss_getting_a_season_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b64a5d01-339b-4886-9d77-b97ac77e04d6/24052230302.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17922a48-d8fa-4aba-aec1-151c92475383/fordham_gym_class_schedule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d89abd30-4aaa-4127-9b83-7b28471140d7/soduxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b28aea9-124e-4845-88c5-cbfe01793149/myles_munroe_books_prayer.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eca4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA4 4816 bytes
SHA-256: d2c6ef5ab0fed0047c4b4fc8ab454b36b764bbcff2ec3305b75dbea83bfbdbfa
font_01_sfnt_off0000fd16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD16 11424 bytes
SHA-256: 0af6015f822f3773c8fd5ed2a43201d47be63461391cd500f632a4be60706916
font_02_sfnt_off0001226a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1226A 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3