Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e623561d3a1d472…

MALICIOUS

PDF

66.8 KB Created: 2021-03-08 23:47:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 2ec0a25458a3f85c4d41b4415b41cb4a SHA-1: bf6bd3daff30f7e2e2496fbb3f5766bdf5eca753 SHA-256: 1e623561d3a1d472d39e6369de5d5746e71b156180053d15b806a9f3fcb99c07
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9676

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 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
  • 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://fokemale.ru/award?keyword=pdf+edit+software+download PDF link annotation
    • https://cdn.sqhk.co/xarobumevux/XhdR9ig/wesipu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393204/normal_6044227c397db.pdfIn PDF document text
    • https://cdn.sqhk.co/muligumixe/7QgZrOd/58014593225.pdfIn PDF document text
    • https://cdn.sqhk.co/zifiguwosu/hfIihij/veggie_ninja_game.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450501/normal_5ff14b5644d66.pdfIn PDF document text
    • https://cdn.sqhk.co/vuvupewog/eOUheYE/tennis_ball_color_hair_dye.pdfIn PDF document text
    • https://sozulidalipidin.weebly.com/uploads/1/3/1/4/131437061/muborunuxizedebapo.pdfIn PDF document text
    • https://cdn.sqhk.co/xekutenupi/hhZFkge/buxukovumobifuxab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419846/normal_6029eebf6cc0f.pdfIn PDF document text
    • https://basedupapopulow.weebly.com/uploads/1/3/4/3/134344364/4932393.pdfIn PDF document text
    • https://tiletemilowa.weebly.com/uploads/1/3/2/7/132710791/pumomoborojoxux.pdfIn PDF document text
    • https://lakubamovoto.weebly.com/uploads/1/3/0/7/130776542/guxeru-gafigisi-rarikujovem-tunupemil.pdfIn PDF document text
    • https://cdn.sqhk.co/monazaxumol/XN2giMm/36000573634.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwipabobatu/cZjj94u/outer_ear_infection_drops_over_the_counter.pdfIn PDF document text
    • https://cdn.sqhk.co/kusedesomawa/BF6hdjd/44163009797.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://2eeb51df-07ba-4372-80d9-1ef4646fc7f7.filesusr.com/ugd/6af210_0409ff9b0b5f48458a42d1892c0f11fa.pdf?index=trueIn PDF document text
    • https://57933e30-1e86-4cbe-ad2b-777cb72f9932.filesusr.com/ugd/235f1a_c53d35aa6d514bb9a5c0a7ac9a3ad135.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/tobopuluti.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/android_chrome_suggested_articles.pdfIn PDF document text
    • https://a1d1c4ac-cf1d-4c58-861c-45d1188f4b60.filesusr.com/ugd/052f3a_bf45ba7da44e44f7a09847ca88bbe85d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/27974140552.pdfIn PDF document text
    • https://00c0516a-c822-4344-a779-6f74e039753d.filesusr.com/ugd/9e41f0_331a35143f1547cf805f8629ef982feb.pdf?index=trueIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0C 4992 bytes
SHA-256: 3aecad1801d720215a43f49fc4f51b0592daa63d60089173bdfa94a0ddb7c81c

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