Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c369e35a7f0cfe3…

MALICIOUS

PDF

74.9 KB Created: 2021-03-11 13:45:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: ab78339da9b8ff47dc77f7a9843c78fb SHA-1: 59aa7aba3d4e761d69db063154987504ece77e9e SHA-256: 7c369e35a7f0cfe3ecd805c563390421aa4f005c97a5026a2a2e0ae220072061
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains references to 'Archers mod apk' and the authoring application 'wkhtmltopdf', suggesting a lure to download potentially unwanted software. The embedded URL 'https://seumenha.ru/123?utm_term=archers+mod+apk' directly supports this phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/123?utm_term=archers+mod+apk PDF link annotation
    • http://usecabinets.xyz/fesupa3kpya.pdfIn PDF document text
    • https://cdn.sqhk.co/vizejagojib/jiaSXjj/crowdsourcing_is_quizlet_mis.pdfIn PDF document text
    • http://nupubidodeje.22web.org/how_to_see_a_doctor_in_spain_on_holiday.pdfIn PDF document text
    • http://getcreditreport.info/elna_supermatic_reviewmm8hq.pdfIn PDF document text
    • https://cdn.sqhk.co/gujowaxexag/ueOgeHp/mapuguwadokoramo.pdfIn PDF document text
    • http://prostotit.site/110146344752y9h9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/dazovosugev/2169070548.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/formica_basalt_slate_review.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/vmware_vcenter_server_appliance_6._0_ova.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/gulafi.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/calculus_ii_series_and_sequences_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/jomiwugadalifi.pdfIn PDF document text
    • https://s3.amazonaws.com/zozofufulolig/for_honor_kensei_guide_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/33827370910.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/chinese_elm_bonsai_tree_care_information.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/injury_report_oakland_raiders.pdfIn PDF document text
    • http://temekem.epizy.com/motorola_mc9090_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/72063099310.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/1224054844.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/zuxoj.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_off0000dc12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC12 4888 bytes
SHA-256: bc23f82affe60c9e40ebf3709ce4af238042b347e7c8b2d978a74c4da2f934db
font_01_sfnt_off0000ec99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC99 10680 bytes
SHA-256: c7f08fef7e5d2273fba9b552c9fd2fcf2f9a21eb69a99ed7725ac6f681233851
font_02_sfnt_off000110b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110B6 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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