Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e19be1b73630a78…

MALICIOUS

PDF

77.8 KB Created: 2021-06-03 11:05:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 07806c23cfa4c52a5eb52ae0b4e24c92 SHA-1: 20562a58d51a4e3ec19ebbdf75c82269c0390fad SHA-256: 1e19be1b73630a786aade407caf3254bf3776f64e4293154a2ec0f3106297a93
126 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and heuristics indicate it functions as a link farm, directing users to potentially malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. The document body, though partially corrupted, suggests a lure related to movie downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://krisoc.ru/pbw?utm_term=tom+ve+jerry+2021+t%25C3%25BCrk%25C3%25A7e+dublaj+indir PDF link annotation
    • https://vedakevuvapi.weebly.com/uploads/1/3/4/0/134013486/312020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484834/normal_60212381e1f5e.pdfIn PDF document text
    • https://rupekiduwixe.weebly.com/uploads/1/3/4/7/134774185/nepipapo.pdfIn PDF document text
    • https://fibepuranes.weebly.com/uploads/1/3/4/0/134041348/bc2a29aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417122/normal_603693fc1641c.pdfIn PDF document text
    • https://luxovifawus.weebly.com/uploads/1/3/4/3/134341193/1661354.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369936/normal_60379d904570c.pdfIn PDF document text
    • https://ninisezidopif.weebly.com/uploads/1/3/5/3/135391617/xarit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445877/normal_6030951f190a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454984/normal_5ff8714acb6d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449419/normal_606d23360bb82.pdfIn PDF document text
    • https://nigusejokolutat.weebly.com/uploads/1/3/4/6/134688827/feduk-xironan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414868/normal_605847e42c1d8.pdfIn PDF document text
    • https://veraroligesabo.weebly.com/uploads/1/3/4/3/134377370/f614453.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488837/normal_60372d931e59e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3b721de-84eb-4380-9436-d53e6acf6ee7/can_rabbits_live_alone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/499eb8d2-c40d-4fc3-8e18-81439efdff15/fexibefes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d300f1fa-10b6-469a-a7d2-0db77807dc70/kerala_charithram_malayalam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02260d9d-18ee-438d-aed5-9026b5f11a4e/pomeras.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB74 5812 bytes
SHA-256: 832e985f742f2caed829d90b890a2c5f9341ea5eefbc7ed187cd7047d1c954d1
font_01_sfnt_off0000eef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF5 4892 bytes
SHA-256: c98299b762ca06a76b7c76ffaafac85e6282ede1b500c1b901794db7c91a41c1
font_02_sfnt_off0000ff90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF90 12380 bytes
SHA-256: 941d800547e64aa941974dd96a4b347f45336b88698af0973105f994663db0e4

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