Malicious PDF — malware analysis report

Static analysis result for SHA-256 7575c5261cb7a84e…

MALICIOUS

PDF

85.4 KB Created: 2021-06-05 00:15:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9f869955e079882454c0298a1fb7c91a SHA-1: 72d57fe5941295658ae24f86e5b9ecfbdbeddfa5 SHA-256: 7575c5261cb7a84ee77fbbfb72a1f751b3466becea54251dc32b102fe56ec974
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 pointing to disposable hosting services, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to malicious sites or download further payloads. No scripts were extracted, but the PDF structure itself is used to host numerous URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://crysiq.ru/pbw?utm_term=12th+class+biology+book+pdf+in+hindi PDF link annotation
    • https://pobogovowot.weebly.com/uploads/1/3/5/3/135323888/vamafulevipam_patuvosizafudam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492573/normal_6019ae0a2172e.pdfIn PDF document text
    • https://poroxokinawutaj.weebly.com/uploads/1/3/4/5/134507376/3addf591803e.pdfIn PDF document text
    • https://dekodisiga.weebly.com/uploads/1/3/6/0/136051758/zorug.pdfIn PDF document text
    • https://mudabirozaduzo.weebly.com/uploads/1/3/7/5/137514717/241172.pdfIn PDF document text
    • https://zofigaxukinepir.weebly.com/uploads/1/3/4/2/134235574/zigat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379602/normal_602f0effb8526.pdfIn PDF document text
    • https://betedodokadez.weebly.com/uploads/1/3/4/8/134882186/2537319.pdfIn PDF document text
    • https://jifozotuno.weebly.com/uploads/1/3/4/7/134758187/1717519.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403263/normal_606e29a2f21ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374699/normal_605be3ecc57a6.pdfIn PDF document text
    • https://sanivuledaxefe.weebly.com/uploads/1/3/4/2/134234591/jowokawexoba_komiwu_jozerifitolib_kexebi.pdfIn PDF document text
    • https://tolubezilonis.weebly.com/uploads/1/3/5/3/135348590/b47d8eae2ed8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421783/normal_60338345d7e22.pdfIn PDF document text
    • https://valodoxajub.weebly.com/uploads/1/3/4/4/134435871/5626725.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0b40f17-694b-46ec-9d58-46cd4da1e494/47192989315.pdfIn PDF document text
    • http://bujolajoxek.pbworks.com/w/file/fetch/144528420/76051830956.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2479537b-4131-419c-8155-9dce872f25c2/1200_bosquejos_biblicos_para_predicar_y_ensear.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58e3664f-9a00-4a7f-a472-cc4ed5cc1d88/75760044712.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06e60d7b-e7cc-4432-ad6a-57d39cc1a369/58010256249.pdfIn PDF document text
    • http://vifogajo.pbworks.com/f/journeys_practice_book_grade_2.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3BE 3256 bytes
SHA-256: 457db592089feb6a9a16f96ccbddb480e3cf9c755a130df2f31e8149de359696
font_01_sfnt_off0000ef79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF79 5716 bytes
SHA-256: 58a4b85c3127bb19556598a79bc5a899da4b33bb2f5ff04721cbb5cee1142017
font_02_sfnt_off000102ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102FF 10460 bytes
SHA-256: 34cde7a0de807fe7359869dc9812bae6ac74e2c8e3539cdb26b61e5ba05228cd
font_03_sfnt_off0001270b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1270B 16060 bytes
SHA-256: a1e2968ca8c7638dd4bef022e186f3fea2b098bc52bbc7b81535a6634822059c
font_04_sfnt_off00013bd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BD8 2964 bytes
SHA-256: 70c5d2d719fd0e285dfcfac34c3dccb0a8cd23783a5dc441a71158fbb1bc7b09