Malicious PDF — malware analysis report

Static analysis result for SHA-256 062d13aa62e95127…

MALICIOUS

PDF

73.6 KB Created: 2021-03-28 22:56:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4eccf66e3c56e99644e584af6b6c56d7 SHA-1: 50850ef58e1a19b05c96a8cfb4bed6cd01c84af0 SHA-256: 062d13aa62e9512730f74943edbcd118a60e58f3262b333f208eeb8c591b367b
156 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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://bologen.ru/wix?keyword=ufo+defense+guide PDF link annotation
    • https://zazalefofano.weebly.com/uploads/1/3/4/5/134578352/giwuremoju.pdfIn PDF document text
    • https://pasikozadiru.weebly.com/uploads/1/3/1/3/131384374/5446660.pdfIn PDF document text
    • http://aycotoro0.xyz/41686146049sgbej.pdfIn PDF document text
    • http://tryse.xyz/a_christmas_carol_by_charles_dickens_short_storyp3kix.pdfIn PDF document text
    • https://tefeteti.weebly.com/uploads/1/3/0/9/130969297/wumeluma-xabesimekugowev.pdfIn PDF document text
    • http://dreabling.online/meeting_room_booking_software_canadadihh3.pdfIn PDF document text
    • https://vogunuwar.weebly.com/uploads/1/3/4/8/134887333/3ec08504869ed.pdfIn PDF document text
    • http://kpovli.ru/char_broil_grill2go_ice_parts7vsa8.pdfIn PDF document text
    • http://thelait.pro/visual_basic_for_applications_access_tutorialwygcz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1366a3ef-3709-41a3-a3ed-eaccee207113/which_echo_show_is_best.pdfIn PDF document text
    • https://s3.amazonaws.com/fexuror/23007091718.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/94387603354.pdfIn PDF document text
    • https://s3.amazonaws.com/genijusemu/enrique_s_journey_prologue_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/serenifi.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/ansi_b16._5.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/lowrance_elite_7_ti_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/7103511415.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/angles_of_shapes_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a34495f9-1a88-4d57-8539-396b9464f12f/star_wars_the_black_series_ahsoka_tano_force_fx_elite_lightsaber.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/decf0c92-b221-4176-9db7-0fdea080fbde/wozanutuvuma.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/foxizamedubepatojidumila.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/xoranu.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/64939559899.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5430ee79-4847-4aa6-b899-230153412afc/how_much_is_a_2020_camry_xse.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_off0000e441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE441 4728 bytes
SHA-256: 63ca63a947e2a676cc3ef2b79ff3d77c8e51ef7a5d570a0ab46ba4bed0ca6cfb
font_01_sfnt_off0000f479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF479 10816 bytes
SHA-256: 40ec057e5ede71092abbbc60a37a4a289efff5b5f07bfcd37dbaf78cbea4c44c

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