Malicious PDF — malware analysis report

Static analysis result for SHA-256 88cb232fdeefeb1c…

MALICIOUS

PDF

96.7 KB Created: 2021-05-26 05:31:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1368b306aee18bcaa73b9a3d68b87704 SHA-1: 50f6b7f21dc3003eb810ea8d55cda80abca4f77d SHA-256: 88cb232fdeefeb1cead299201c1f19c9d82e35395d770cb6293e2435899a40b3
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 0.9988

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://leonvi.ru/strik?utm_term=avramis+ichimoku+indicator PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409628/normal_60590804c9a06.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465267/normal_5ffd1a3b5ec17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471683/normal_605607738b3e1.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/jobavo/vinonixewidukakebax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2875132b-eae0-4e25-adfa-b561555e6234/how_do_i_write_a_tribute_speech_to_my_mother.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d481a0fa-a052-47b1-acfe-238e74383904/top_hunter_dps_rankings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ea9c7fd-67b1-4e23-a263-85a61aa2e870/gram_parsons_a_song_for_you_lyrics_meaning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecdc7e2f-54e3-4ea4-870b-64fbdff02002/24416540284.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a00f0b7-069d-461e-8e7e-835e1ab383f1/11.snf_fizik_kuvvet_ve_hareket_soru_zm.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56a24045-35e7-4517-bf54-0593df40b926/what_is_reflection_coefficient_in_transmission_lines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30d536f3-84cc-4b05-9128-542e3acdc0e4/kibekufuxal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2fb48d9-6dd3-49ea-82e7-8dd7e6271b1d/govupuzoja.pdfIn PDF document text
    • https://s3.amazonaws.com/fekife/goodbye_world_review.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/citra_android_cheats.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e34beea3-7778-4775-b8ea-d7f8df469de5/apple_iphone_5c_price_in_pakistan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d4c14e9-0f42-4d5f-b90c-79ce9dcfbb15/merunuxajel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4abe2b1-6f82-4dba-a018-abe7e7ccde00/how_do_you_say_hey_beautiful_in_jamaican.pdfIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/karukopitotos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b595b59-f4d1-43c4-8818-f8bdd0aabd15/how_to_remove_a_motion_sensor_bulb.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/readynas_nv_v2_maximum_disk_size.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/javitunegapegir.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/wonderful_christmas_time_piano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84b7aa23-de32-4d51-b800-e40f1d27d6c4/78620629310.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a58b943c-2f82-4777-a71e-3d37171a57ec/41518737469.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000116c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116C6 5260 bytes
SHA-256: 7da78617b5cc214892764035c79081e8706cdff7d9d1a5e221b104cdf113afe4
font_01_sfnt_off0001287f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1287F 23800 bytes
SHA-256: 75b34a552330467f6e6faf2c8eead7d80bd5552afbcee82d15d1b4884211c18d
font_02_sfnt_off00015dd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15DD9 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

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