Malicious PDF — malware analysis report

Static analysis result for SHA-256 165ecfd68e55e3d7…

MALICIOUS

PDF

72.2 KB Created: 2021-03-05 21:40:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 02e82de6e8333eb063323a2b9a88f1ac SHA-1: 26288828b209f7045ffd2dc927c46f16c3e4f906 SHA-256: 165ecfd68e55e3d71e9216882122fbdb7ee973af032c271e2f52e3edc8aba206
134 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan distribution attempt. It utilizes SEO tactics and disposable hosting to lure victims with promises of free downloads, likely leading to a malicious payload. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://golowaki.ru/wix?keyword=conversations+with+god+free+pdf+download PDF link annotation
    • http://tiluvopira.medianewsonline.com/87446828775.pdfIn PDF document text
    • https://cdn.sqhk.co/wunasesev/hfU10ig/97417457386.pdfIn PDF document text
    • https://guxovixig.weebly.com/uploads/1/3/5/3/135317997/81f68f8fdb3.pdfIn PDF document text
    • https://norusukesalija.weebly.com/uploads/1/3/4/3/134356509/3907484.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454052/normal_5fcb2d8259a87.pdfIn PDF document text
    • https://sovejugi.weebly.com/uploads/1/3/4/6/134652237/8081236.pdfIn PDF document text
    • https://cdn.sqhk.co/mezutorixo/jJnhbhc/tuzovugefolepuxugamoxugat.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369503/normal_5ff7c07e5073f.pdfIn PDF document text
    • https://cdn.sqhk.co/fukonovum/jxargdJ/best_free_video_player_for_android_phone.pdfIn PDF document text
    • http://zunuruxeguxifi.mygamesonline.org/40727895974.pdfIn PDF document text
    • https://pimakesoxokozo.weebly.com/uploads/1/3/4/0/134041299/gifefod-konivin-rinupujewatike-xenusan.pdfIn PDF document text
    • https://dewubixire.weebly.com/uploads/1/3/1/3/131398231/1460879.pdfIn PDF document text
    • http://gomigapujasep.sportsontheweb.net/54315961777.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://67258aaf-84c5-4a88-bfd2-1aa7ddb6c27a.filesusr.com/ugd/850f07_0ec9a4ee94a94520b77282e07ec7a240.pdf?index=trueIn PDF document text
    • https://cb70cc59-2297-49c3-b7e2-2ac7e26e28d4.filesusr.com/ugd/4479ed_24addf4c79b24128b36ad34d1d3bf580.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/kinesics_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/76786732065.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/michelin_star_guide_london_2019.pdfIn PDF document text
    • https://4cf6c2b4-cd84-4b73-83b1-bf7f441162b2.filesusr.com/ugd/e50c99_c67864a669604560b378b773199159fc.pdf?index=trueIn PDF document text
    • https://13a7c488-548c-4b48-b567-d2b0b9a3e1de.filesusr.com/ugd/85d67f_f37c7d277b70472c9c8b747bc5c6811f.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD82 5360 bytes
SHA-256: 6cee6ffe3c2e6a5cd0076355e98582911dd1bcdd981cbdcc8cb8bf000a7e49c8
font_01_sfnt_off0000efce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFCE 10396 bytes
SHA-256: c19353c051d806003db79ce62736a30823b2499336635059aa485f0c91070f54

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