Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d8f511b5cedd7d8…

MALICIOUS

PDF

77.9 KB Created: 2021-04-30 04:51:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fda0b066628dddcd600a1f51bd264b3e SHA-1: dbe4faa9b303e6e451dd23181a91ac8d107a50d8 SHA-256: 7d8f511b5cedd7d86df5b1d3ef91dba7cc238aadd3f2d3a8e19f016f22e7d614
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external URIs, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were extracted, the PDF's structure and embedded URLs point towards a social engineering attack to trick users into visiting a compromised site.

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://xezojetit.ru/strik?utm_term=attached+amir+levine+review PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4489042/normal_6013ca47ab664.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/fluval_206_filter.pdfIn PDF document text
    • http://lozotago.iblogger.org/zarepokujefife.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386593/normal_60586bb5b18bc.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/wakigoniro.pdfIn PDF document text
    • http://kabomodom.iblogger.org/benuxajapirabeku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366008/normal_605abb5d75caa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446260/normal_5fdf6a5f8d482.pdfIn PDF document text
    • http://lavisil.22web.org/58080801969.pdfIn PDF document text
    • http://tufusojakigun.iblogger.org/jurnal_manfaat_cacing_tanah.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418778/normal_5ff51a0bf144c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vofaxov.epizy.com/toyota_corolla_altis_2009_tyre_size.pdfIn PDF document text
    • https://0a3c8164-ddd9-4522-8472-457ce31ece15.filesusr.com/ugd/d32f78_aef401a313f54699a154a0b0ea3dcf1a.pdf?index=trueIn PDF document text
    • https://aeedc83c-a41d-4179-9d48-e770e4c4cd47.filesusr.com/ugd/e010a7_14e111d8904d4431bf1024d665ee4378.pdf?index=trueIn PDF document text
    • http://tufeloxe.rf.gd/arithmetic_sequence_worksheet_algebra_1.pdfIn PDF document text
    • https://700ceb37-22d2-47c5-9888-d858af679aee.filesusr.com/ugd/c345b0_98f133d8fc594051b9a016e9f367d58b.pdf?index=trueIn PDF document text
    • http://xatosizukav.epizy.com/pdf_split_and_merge_freeware.pdfIn PDF document text
    • http://lawupoxag.epizy.com/wenivironirupoxob.pdfIn PDF document text
    • https://676a7a22-5bec-432e-92e0-9d4a0a27851c.filesusr.com/ugd/a1fb72_76f5deb3f93d4dbba42c0a3c2ebe0ac0.pdf?index=trueIn 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

Related samples 6

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f265.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF265 5140 bytes
SHA-256: 87374b4e88506f45bea978cb6bf000f49eab5c63550cf0a0c62f638f50736fd0
font_01_sfnt_off000103c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103C5 10928 bytes
SHA-256: c137fac54f6b38155880fd86df270ced36bdd6f937f21b6b21bf57093c51f0e3

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