Malicious PDF — malware analysis report

Static analysis result for SHA-256 07e56d219b95a077…

MALICIOUS

PDF

94.4 KB Created: 2021-05-10 14:49:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d49c6c294e36227ee6d161f72c403060 SHA-1: 16fbaeb90333b50949f3567dee54fab332372c93 SHA-256: 07e56d219b95a07781c441c569c29dc7b2669028e21fdc8e4fa1fa1c13d5170b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment 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 0.9996

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 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.
  • 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://ponafet.ru/strik?utm_term=how+to+make+a+free+song+playlist PDF link annotation
    • http://maretexojud.66ghz.com/40639643177.pdfIn PDF document text
    • http://palejep.22web.org/6204663944.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://48b7024d-7414-4593-b44d-ed892b96ad15.filesusr.com/ugd/3e5db3_885fd2698a9a4b34aca9b8e41f01f3fc.pdf?index=trueIn PDF document text
    • https://a001dc82-f31e-4944-9b76-0a8e602b6855.filesusr.com/ugd/e4ee87_d6ec68fed32d41048b970ddb2b7cc93b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/52609355214.pdfIn PDF document text
    • http://fokemadet.epizy.com/lobekixozodan.pdfIn PDF document text
    • http://xenexunir.epizy.com/fejasubejuninez.pdfIn PDF document text
    • http://zariwatanelil.rf.gd/vezafanutovesabotu.pdfIn PDF document text
    • https://0e67983c-e844-40c9-b604-97311ec94efe.filesusr.com/ugd/6e13d9_9944bd1ec1a94750a88a6d52aa82f479.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zidenigad/potan.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/genie_excelerator_2_revolution_series_model_4062.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/honda_small_engine_repair_center.pdfIn PDF document text
    • http://beguresenoraw.epizy.com/budget_app_android_and_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/jidonexegap.pdfIn PDF document text
    • http://xokilovemu.rf.gd/fubika.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/jetapovav.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/maryland_college_and_career_ready_standards_math.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/nasty_gal_shoe_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/whatsapp_2018_free_for_android.pdfIn PDF document text
    • https://d89a15f7-21b5-45f0-b9b4-bc5b7be68842.filesusr.com/ugd/18e821_42ba906aaa514aa2ae537ba234cb4ac4.pdf?index=trueIn PDF document text
    • http://dadusuxu.rf.gd/mitubelebewago.pdfIn PDF document text
    • http://xujiwusa.epizy.com/fubesoxozomuwoduxuveniz.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_off0001325c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1325C 5440 bytes
SHA-256: d71e294185c217a48bdceb82b6e06376fb3602526e8a62290702fb9d318bf7e7
font_01_sfnt_off000144e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144E4 11964 bytes
SHA-256: 0dc7c2565e3a0ee531068fd4ed6c2505494b1355b4b8b7c9f24cb1d828602beb

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