Malicious PDF — malware analysis report

Static analysis result for SHA-256 215ea54ea29967a1…

MALICIOUS

PDF

78.8 KB Created: 2021-01-22 06:46:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: a2b072c860dd82213c8a4645a8f0abfe SHA-1: 4c6752102dd76c7c91652335c8e13ac3b8e8403b SHA-256: 215ea54ea29967a1b210c154808afb5aac34394b640c4ccc7782c525ec0ec86b
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It functions as a link farm, directing users to various PDF documents hosted on disposable domains, with a primary lure related to a 'New balance heart rate monitor watch manual'. The presence of embedded URLs and the link farm structure suggest an attempt to distribute malicious content or phish for credentials. No scripts were extracted, but the overall structure points to a client-side exploitation or download attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/123?utm_term=new+balance+heart+rate+monitor+watch+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4415051/normal_5fd5f283da333.pdfIn PDF document text
    • https://wofigazidiw.weebly.com/uploads/1/3/1/4/131437722/japubulesaburef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458826/normal_5ff4973198a14.pdfIn PDF document text
    • https://cdn.sqhk.co/mivijigonof/EbghhiY/tesurigisikonekufedemuma.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406191/normal_6009ca3c1e637.pdfIn PDF document text
    • https://cdn.sqhk.co/xopigotax/ib6rii2/green_party_beliefs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465015/normal_5fffa416f014b.pdfIn PDF document text
    • https://mitivowa.weebly.com/uploads/1/3/1/6/131607237/fotawit-mofigevem-juxonutebifi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368969/normal_5fe65e73ac203.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413838/normal_5fdd3a0c04fc2.pdfIn PDF document text
    • https://cdn.sqhk.co/baradudapati/LDic9hg/63916895534.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401723/normal_5fc592dd1e54b.pdfIn PDF document text
    • https://wunepilupizuxo.weebly.com/uploads/1/3/1/8/131857535/7663346.pdfIn PDF document text
    • https://cdn.sqhk.co/lojeliju/jhR4Rie/online_registration_9th_class_gujranwala_board.pdfIn PDF document text
    • https://cdn.sqhk.co/xogedusov/cprjjjf/download_aplikasi_block_puzzle_jewel_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/siloneza/naiacrm/alto_s_adventure_unlock_characters_mod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wuvuwipiwizovid.epizy.com/arcore_apk_1._2.pdfIn PDF document text
    • http://vofofoduwegakuv.rf.gd/kebomisukagepoj.pdfIn PDF document text
    • http://kubegixojarabax.epizy.com/polarity_of_molecules_worksheet_answers_chemistry_if8766.pdfIn PDF document text
    • http://dasujisetojasel.epizy.com/29679354620.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF753 5064 bytes
SHA-256: a74b4a8b52cb7c065ac87ab1f9c2760e403e3f8f29fbe47ca49196bb185327f6
font_01_sfnt_off00010876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10876 10776 bytes
SHA-256: fbd2008782b04208999b7ba49d39c91f17f26843cd447092c9ba296c705f2ec1

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