Malicious PDF — malware analysis report

Static analysis result for SHA-256 1006095f0aeca20e…

MALICIOUS

PDF

78.9 KB Created: 2021-03-15 05:56:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 88029052f5df3687cb07ccc57038738d SHA-1: 21005294b06dc3b370a1414fb74e97aa8ad51fd0 SHA-256: 1006095f0aeca20e4fff4264c68d8e7c3fe5cdcac8a665d9615700a6f9d6063c
126 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one specifically pointing to a domain that appears to be a phishing lure related to 'acca june 2020 exam dates and fees'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or credential harvesting. No scripts were extracted, but the presence of numerous external links suggests an attempt to redirect the user to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=acca+june+2020+exam+dates+and+fees PDF link annotation
    • https://cdn.sqhk.co/jedepazisu/jgOjd72/wefarojapibu.pdfIn PDF document text
    • https://cdn.sqhk.co/piredonina/gab2aij/green_pumpkin_ideas.pdfIn PDF document text
    • http://pumorux.medianewsonline.com/74962207264.pdfIn PDF document text
    • http://fasusugexewi.22web.org/waltz_of_the_flowers_violin_sheet_music.pdfIn PDF document text
    • https://cdn.sqhk.co/sivadapexiri/RiahdqN/dental_assistant_jobs_adelaide_no_experience.pdfIn PDF document text
    • https://cdn.sqhk.co/dedomafub/gugjjhc/22281710087.pdfIn PDF document text
    • https://cdn.sqhk.co/vilubofi/TXbgeje/jivivewaxetur.pdfIn PDF document text
    • http://tutaxobege.22web.org/h81m-e33_bios_update.pdfIn PDF document text
    • https://cdn.sqhk.co/tavaxikanabu/heSUEbW/hatchimals_hatchibabies_guide.pdfIn PDF document text
    • http://sozapemogoz.mygamesonline.org/trig_calculator_for_non-right_triangles.pdfIn PDF document text
    • http://sodamasagu.66ghz.com/meririlonurusedob.pdfIn PDF document text
    • http://kemutedetabu.scienceontheweb.net/tevokuvolase.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/jeromisixinolib/boom_boom_sauce_recipe_sheetz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e72e320e-2f8e-41ae-a3bd-bbef4e7f3d70/72076433923.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8ad8d57-6c64-47f4-95ab-c9f28baed7a0/english_speaking_sentences_in_daily_life.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/zirig.pdfIn PDF document text
    • http://wovuluvoju.onlinewebshop.net/how_to_read_music_notes_faster.pdfIn PDF document text
    • https://s3.amazonaws.com/jukezeluf/83805608301.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af3d53b8-0dfa-4db6-ae6b-d2b6d61551bc/contrato_de_arrendamiento_sencillo_mexico_word.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/702867dd-d7db-4c5d-b998-a45d0ff10ef3/modern_family_season_1_episode_11_script.pdfIn PDF document text
    • http://sukuvafeliji.epizy.com/bleacher_report_nfl_preseason_power_rankings.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_off0000f402.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF402 5448 bytes
SHA-256: a0e89957db852892a0a0c464873e940be08951c9ff086db431d437e096299c75
font_01_sfnt_off0001068b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1068B 11204 bytes
SHA-256: 7ba3ae8f267df11b216eedf2b91a8afbb69bcf8d7b0b5b6038a420c78b77dc9f

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