Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c77390218b933b2…

MALICIOUS

PDF

75.6 KB Created: 2021-03-31 07:01:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: cb3236c9d0ac38537e5f177f98a61905 SHA-1: fa1777aec0950b950fdc74139be10393b3a7ef54 SHA-256: 7c77390218b933b2940835ef23112e990c00b78066a2f9f2e5f926e30e6a3ea2
164 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing lure and hosts a large number of external links, many of which are SEO-themed. One prominent URL, 'https://xezojetit.ru/strik?utm_term=task+force+drill+press+manual', appears to be the primary malicious destination. While no scripts were explicitly extracted, the PDF structure and the presence of external links suggest it's designed to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://xezojetit.ru/strik?utm_term=task+force+drill+press+manual PDF link annotation
    • http://xbet1.fun/foundation_stage_maths_worksheetstr660.pdfIn PDF document text
    • https://bovopoboj.weebly.com/uploads/1/3/0/7/130776351/8508426.pdfIn PDF document text
    • https://miboxijudowisu.weebly.com/uploads/1/3/4/4/134491333/situzejidez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376404/normal_605fa75c0434b.pdfIn PDF document text
    • http://juilopkiretlo.ru/6067128085031pej.pdfIn PDF document text
    • http://bluebadgeform.com/80546854070p272o.pdfIn PDF document text
    • http://capridigi.com/analysis_toolpak_mac_excel_2011ax7y7.pdfIn PDF document text
    • http://simcars.ru/29517452498whiij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412151/normal_60602d1fadfce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387411/normal_5fd21764838f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453556/normal_5fec5977ecf8a.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/nezanurugega/performance_appraisal_problems_and_solutions.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/kung_fu_panda_legends_of_awesomeness_season_1_episode_10_dailymotion.pdfIn PDF document text
    • https://dab7fb03-f2af-4a8e-9cb9-31de623bedb3.filesusr.com/ugd/58b596_8a901df9f0024db3b7b875a349ab569a.pdf?index=trueIn PDF document text
    • https://eee5dff6-7331-416e-acdf-593d0c386862.filesusr.com/ugd/21e9e0_e753196c8d6b4815acdfae18628e99cc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tobovunoberiki/dramatic_irony_examples_in_romeo_and_juliet_act_3.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/wabasosazepawutogin.pdfIn PDF document text
    • https://f7f2eb1f-4ce6-40bf-b337-6bcc2c9c1a95.filesusr.com/ugd/dc6899_d2fe28cd8ecb4e7ba748d524fabf538c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zuniverijesud/vatinob.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/tasigetirogabupapoxeleka.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/jisejexitokijeva.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_off0000eabe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEABE 5316 bytes
SHA-256: 2128b54e68b543b5205063834d4e189c722d45d945d2d40ab3b1bacd4e18a1b5
font_01_sfnt_off0000fcc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC0 10684 bytes
SHA-256: ef491ecdfe583fee962d975f5e2ae36c9bdd95d6e048a97c4b0ec75e7e760908

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