Malicious PDF — malware analysis report

Static analysis result for SHA-256 a14d90219248b417…

MALICIOUS

PDF

77.3 KB Created: 2021-03-01 21:41:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: e0cb3730f50729226ae64bd8d35a5f4a SHA-1: a2c6c1e392dab8e87da7d031c83de9658276daf7 SHA-256: a14d90219248b417dabe226f94cfa0053ecac8b89de6afba846297896475ac46
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, contains keywords related to 'Starbucks barista manual', suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://vilenefex.ru/wix?keyword=starbucks+barista+aroma+grande+manual PDF link annotation
    • https://cdn.sqhk.co/nunologen/9jijcjg/coconut_rum_balls_vanilla_wafers.pdfIn PDF document text
    • http://fukerijinexin.mygamesonline.org/49060381866.pdfIn PDF document text
    • https://cdn.sqhk.co/mavozopofug/hfjdhcH/cramped_in_a_sentence.pdfIn PDF document text
    • https://cdn.sqhk.co/lagusive/ifjcgeN/49959086107.pdfIn PDF document text
    • https://cdn.sqhk.co/wupifufexix/iIghdo7/negavovawuwunukadu.pdfIn PDF document text
    • https://cdn.sqhk.co/videgogaf/8OOhnp2/79436236249.pdfIn PDF document text
    • https://cdn.sqhk.co/wimiwupo/ig0gdhg/used_electric_steam_table_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/winelolibug/ghg9mXP/5801923966.pdfIn PDF document text
    • https://cdn.sqhk.co/jezuleku/gg5hcgc/fbi_special_agent_salary_glassdoor.pdfIn PDF document text
    • https://cdn.sqhk.co/bidogefapo/Lghygje/mediq_health_coaching.pdfIn PDF document text
    • https://cdn.sqhk.co/menaleratupo/igjfhaz/xujemuwugivokafobedafu.pdfIn PDF document text
    • https://cdn.sqhk.co/ramidazumiko/7gjjfib/saturday_nfl_games_tv_channel.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/rewepalazamiso/nikaninulorafikuxu.pdfIn PDF document text
    • https://s3.amazonaws.com/xubifupi/60767588531.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/waterboss_700_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/nvidia_shield_spec_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/balu_mahi_full_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/xukewazinaretalikibexin.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/does_apple_still_support_ipod_nano.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/jiboxepogeregexibanuxetud.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_off0000ef99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF99 5568 bytes
SHA-256: 6c878e177ad58d6d22dab0e8151079f4abd91f10e58983e0132102e38ec1f83a
font_01_sfnt_off0001026c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1026C 10772 bytes
SHA-256: 876e3e339c41360da7229f4a114feca16f399c90cee647b5fea14deee0c1f048

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