Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0662804e1d4c9f3…

MALICIOUS

PDF

80.0 KB Created: 2021-01-31 13:17:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 212d779fa3280005dc7daaa438cf50c1 SHA-1: a291f6f1f48c90a2b34b4a2672c833b03e34461e SHA-256: c0662804e1d4c9f3f2ac4798e1e41761e2a5e9657ce7dc2c6cc2ecf178b6a2e6
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains an embedded URI pointing to 'https://baarspo.ru/aws?utm_term=contemplated+english+meaning', which is likely used to deliver a malicious payload or conduct phishing. No scripts were extracted, but the presence of a malicious URI in a document flagged as a trojan strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/aws?utm_term=contemplated+english+meaning PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388428/normal_5fe72282dc4e5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404292/normal_5ff5d348db122.pdfIn PDF document text
    • http://zatuzosej.iblogger.org/weveturipemubav.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373999/normal_5feb5c2159d57.pdfIn PDF document text
    • https://cdn.sqhk.co/notenirikev/Z1GRicW/gunship_strike_3d_game_online.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://puzexexaniledow.epizy.com/boosted_performance_mooresville_north_carolina.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/karudubarofeganozubava.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/helm_chart_template_if_condition.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/calendar_planning_template_in_excel.pdfIn PDF document text
    • http://lemiwiwivafato.rf.gd/57409659702.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/actuaries_india_study_material.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/24303726737.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/dell_r710_firmware_update_iso.pdfIn PDF document text
    • http://rowovotufuru.epizy.com/gagipi.pdfIn PDF document text
    • http://fekobovovexi.epizy.com/saxiparumufejowutuvi.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E0 3060 bytes
SHA-256: bb861ef54d45aba53c9b0863b732f6cc1492decbd5811eb4a8ba7ca35116fc10
font_01_sfnt_off0000e4b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B9 5180 bytes
SHA-256: 21751f826f67deca8235253b16130ba56043ab9307d326e461eed44f1edb349f
font_02_sfnt_off0000f622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF622 5832 bytes
SHA-256: 4072245dd192d9c42fed522009ec2d96e5602617dcc4c8fc6d6e2546c2c5da19
font_03_sfnt_off000104e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104E1 15020 bytes
SHA-256: f35784c47fc7f53136760a1c3e7f12f987a3289d7fe55a8f0f6b74de986b3ede

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