Malicious PDF — malware analysis report

Static analysis result for SHA-256 0abf1d4190658845…

MALICIOUS

PDF

76.3 KB Created: 2021-05-15 14:56:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 4fd53d64970bb6fb4ce94322567fc935 SHA-1: d6dde292d41c4c21a713d53388762ada01506a51 SHA-256: 0abf1d41906588456443b9ae8030055e9204578142b8671a2903eb2b20d8223a
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jacksth.ru/strik?utm_term=what+is+child+guided+learning PDF link annotation
    • https://cdn.sqhk.co/kitaparek/cdyPbji/marketing_plan_in_a_business_plan_example.pdfIn PDF document text
    • http://plusstore.pro/nobaduk7pc3j.pdfIn PDF document text
    • https://cdn.sqhk.co/soziwariru/jiehfOh/4_pics_1_word_8_letters_daily_challenge.pdfIn PDF document text
    • http://refajunabewatog.iblogger.org/new_furniture_design_catalogue.pdfIn PDF document text
    • https://cdn.sqhk.co/letinumi/eDijSzQ/command_line_test_connection_to_sql_server.pdfIn PDF document text
    • http://digitalliteracyinstitute.com/lowrance_elite_7_ti_manual2vrs2.pdfIn PDF document text
    • http://igcopyrightverify.com/eddie_bauer_pack_and_play_instruction_manualfcumm.pdfIn PDF document text
    • https://cdn.sqhk.co/farafakilof/KhegjrQ/nascar_finish_line.pdfIn PDF document text
    • https://cdn.sqhk.co/vumusokutil/eVjipFT/gezomezabinatoxadob.pdfIn PDF document text
    • https://cdn.sqhk.co/temejikowewa/vghjjcT/vizaxozominilunagisozel.pdfIn PDF document text
    • https://cdn.sqhk.co/tidilotofuka/5iiidcG/54584383684.pdfIn PDF document text
    • https://cdn.sqhk.co/remimidotomi/dhbbicF/download_malayalam_stickers_for_whatsapp_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/dolubivo/ggnXVji/cbs_sports_franchise_football_hack.pdfIn PDF document text
    • http://vizionsmc.net/17693179145smlc1.pdfIn PDF document text
    • http://llloooodddd.space/bluebook_statute_short_formenm2i.pdfIn PDF document text
    • https://cdn.sqhk.co/jabosuve/hhiihdp/we_happy_restaurant_mod_apk_2._6._21.pdfIn PDF document text
    • https://cdn.sqhk.co/vuzujugasije/pJhjtF6/93077383361.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/zoluwivebiro/titozewasafirevozu.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/cds_admit_card_2018_2.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/knowing_god_by_name_david_wilkerson.pdfIn PDF document text
    • http://tutakaxebi.epizy.com/ap_biology_exam_review.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/chineke_idinma_song.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/alpine_ktp-445a_power_pack_install.pdfIn PDF document text
    • http://bubomikofar.epizy.com/gre_quant_example_problems.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE2A 5216 bytes
SHA-256: 962829578ffd10daea3611b45d2e821c5f24e3f48bce55e4dc67f9f0dbbeb0fc
font_01_sfnt_off0000ffeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFEB 10496 bytes
SHA-256: 31f5a4f3e11299698dbabca14464c019b75fdb0a8285af9cd42eaab790d27af6

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