Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6eab8eee35db89b…

MALICIOUS

PDF

77.4 KB Created: 2021-03-29 07:14:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 05350ee6d2a245c673ae2d74b1164f16 SHA-1: 8fa988ad1c18081cfaf25b75ae6a1869e60ce60a SHA-256: e6eab8eee35db89bc6c9c141eaa25507de15ec35d9c91cddff257be5ce91fee8
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/strik?utm_term=multiplying+and+dividing+polynomials+worksheet+pdf PDF link annotation
    • http://carbackseat.site/king_air_c90_flight_manualf6c5d.pdfIn PDF document text
    • http://lavkavkusa.store/flysky_fs-gt3b_transmitter_with_receiver44rgt.pdfIn PDF document text
    • http://imedo.ru/9384265578330ud9.pdfIn PDF document text
    • http://jidameke.mypressonline.com/bodyweight_strength_training_anatomy.pdfIn PDF document text
    • http://pihodze.com/21692599972211a2.pdfIn PDF document text
    • http://suvolupijiro.mygamesonline.org/optimal_capital_structure_theory.pdfIn PDF document text
    • http://lidlid.xyz/44555431475ezu1e.pdfIn PDF document text
    • http://generatorsale.ru/early_bird_restaurant_phone_number0vwz2.pdfIn PDF document text
    • http://afracheat7.xyz/amway_water_filter_e85_manual13cx3.pdfIn PDF document text
    • http://madawuboso.sportsontheweb.net/29115896802.pdfIn PDF document text
    • http://smm-target.ru/jusomavarujanununuvyq2os.pdfIn PDF document text
    • http://segaruzobuguses.scienceontheweb.net/walmart_hours_of_operation_christmas_day_2020.pdfIn PDF document text
    • http://polnews.xyz/how_much_do_music_lawyers_makedze11.pdfIn PDF document text
    • http://lisojuribopuwad.22web.org/64896712735.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kimajuj.epizy.com/announcement_letter_sample.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/229ca800-fabc-4f0f-9dc8-0b8785c68469/the_girl_with_the_dragon_tattoo_full_movie_english_subtitles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f481933e-ab5c-4e89-bf62-58d72d5595fd/vedumebikok.pdfIn PDF document text
    • http://xekabotiwuker.atwebpages.com/86443883249.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7127108-eba0-4e98-b636-95f111ec56f2/41177231537.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/love_ringtones_telugu_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/2048_mod_apk_ios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ccf64af-13b8-4565-b222-9265cc0c3c6a/how_to_use_gardners_multiple_intelligences_in_the_classroom.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/tatasurise.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/peragupofikamexugebefo.pdfIn PDF document text
    • http://fudogupadi.rf.gd/graphic_design_books_for_students.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_off0000f0e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E8 5780 bytes
SHA-256: 7dfb436f7ffffd2f78d07641d586867d1e6cf21b5f56bc7b58138efa9f26cfcb
font_01_sfnt_off00010494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10494 10384 bytes
SHA-256: 6abda383068c58d8ec93c7bac932aed3166e7c28323769fdd54d4ac54a1adda6

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