Malicious PDF — malware analysis report

Static analysis result for SHA-256 a90ab5f19ce76aa0…

MALICIOUS

PDF

80.8 KB Created: 2021-04-05 12:59:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 8ffa1ab2f76ba55a4053bd4b287dee46 SHA-1: 1007074294a88db4fc570ca9eb9e8fb9cbeda4ed SHA-256: a90ab5f19ce76aa05c3963eadb27d10a1c0fbda5dbf873811f2bef5fa97cc4a3
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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://midufefew.ru/award?keyword=aprendizaje+colaborativo+en+el+aula+pdf PDF link annotation
    • http://winoorama.fun/57372982923i88ut.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • http://shopsmmv.site/aha_hypertension_treatment_guidelines_2019t7n26.pdfIn PDF document text
    • http://fakts.design/panasonic_emt_conduit_catalogueu2tmd.pdfIn PDF document text
    • http://legalvictory.group/laufstrecke_bei_google_maps_messenkwlrd.pdfIn PDF document text
    • http://complerbnp.com/hp_6700_printer_errorn4f58.pdfIn PDF document text
    • http://shoop-fk.ru/timiruwatofatawfrqht.pdfIn PDF document text
    • http://gayerkan.com/migopomekobonld07i.pdfIn PDF document text
    • http://flymoney.net/what_caused_enlightened_absolutismyyf9m.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/vipuxafol/19852868732.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/jufuwofimaketesap.pdfIn PDF document text
    • https://s3.amazonaws.com/bipovoromoj/vekamirelurunewezetuwe.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/advertisement_template_maker.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/how_to_log_into_chrome.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56b37ce3-6ff5-44dc-a53d-85603ddd0491/31345720162.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/el_mundo_de_sofia_jostein_gaarder.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/067f1ccf-f6e6-492e-bbff-a8ac712ec77b/65564071727.pdfIn PDF document text
    • https://s3.amazonaws.com/tisegovofu/vidatenafuf.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/87023733972.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/20998147753.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/96592217636.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/ludhiana_weather_report_7_days.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7e8fccb-f23d-44a9-b67c-8f6fb73a1af3/bunker_hill_security_camera_model_no_95914_wiring_color_code.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/67438788848.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3543ddb4-b9a8-4504-ae36-71253deb1194/the_natural_way_to_draw_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71bc5d90-4d72-4d35-b3b1-af4603fc52fb/7186928930.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/write_and_graph_linear_inequalities_worksheet.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_off0000ee26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE26 5168 bytes
SHA-256: 17e82285dcfaaf6d149cb206bab57b1ad9fd5386945c9a7c91181d827c260e5a
font_01_sfnt_off0000ffc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC8 11572 bytes
SHA-256: cef9eaaa195b19f080394758954b84c7188c189e4c1f89353a57e2b3b15abe6a
font_02_sfnt_off0001256a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1256A 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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