Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d67f0fc5204e60e…

MALICIOUS

PDF

75.4 KB Created: 2021-03-30 08:30:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 1c61dab2940ced5906c68c92d8f21222 SHA-1: d2afee7e4205c22c273e52fc83ef1ad22ba771a0 SHA-256: 9d67f0fc5204e60ea42ecff1a0eb9ac6f699e94ccc5c838dc5a99262d641e2a6
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document is identified as malicious by ClamAV and a machine learning classifier, indicating a high likelihood of malicious intent. It functions as a link farm, presenting itself as a resource for game cheats to entice users to click on numerous external URLs, many of which are hosted on disposable domains. The primary lure appears to be related to 'apk hack clash royale 2.9.0', suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://pelibifir.ru/wix?keyword=apk+hack+clash+royale+2.9.0 PDF link annotation
    • https://fobabunopana.weebly.com/uploads/1/3/0/9/130969757/2953358.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373511/normal_602e28b43f8dd.pdfIn PDF document text
    • http://peroruse.iblogger.org/acanthus_montanus.pdfIn PDF document text
    • https://bikizulotozenap.weebly.com/uploads/1/3/1/8/131860645/fejalefevedugojun.pdfIn PDF document text
    • https://pusiruse.weebly.com/uploads/1/3/4/7/134717846/c4fc455692e11b.pdfIn PDF document text
    • https://rudabukonavapuk.weebly.com/uploads/1/3/4/0/134016662/pumime.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384310/normal_602f9a044b2ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371003/normal_60415be7ceba1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417809/normal_6015fc672e4aa.pdfIn PDF document text
    • https://xuxukiworizep.weebly.com/uploads/1/3/4/7/134723333/farawoloruxe_wugamamufi_kipeb_bejukagutebi.pdfIn PDF document text
    • http://piriketag.22web.org/64810731232.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488809/normal_6042d47945c36.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/sas_ods_graphics_outputfmt.pdfIn PDF document text
    • https://8dfd47f4-e591-4377-92a3-bdbf91d41e5a.filesusr.com/ugd/a58b01_dc747c45a00b48498b7021a985ea5b14.pdf?index=trueIn PDF document text
    • https://1923692e-f727-4f58-80a8-3583160180e3.filesusr.com/ugd/c4ccc4_39d40678920c437ea988fdc5b98ce992.pdf?index=trueIn PDF document text
    • http://bofujenarabi.rf.gd/30104445937.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/33792125133.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/54406113166.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/tadodaworuwimeb.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/adobe_acrobat_free_windows_10.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_off0000e6f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F1 5636 bytes
SHA-256: 2453b8195b515d9370b54bb9102d9128fd6a29f2d0316a57a2714faf4e86813e
font_01_sfnt_off0000fa1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA1E 10816 bytes
SHA-256: 06eee40d82a4d6d2eef72baccdcda57101935f20d03820d7ddabde58177090d2

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