Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bb9420a19e7aa79…

MALICIOUS

PDF

82.0 KB Created: 2021-03-23 11:12:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c934303abcade8077b6868dcee426daf SHA-1: 947da81c808834edae8cf4b6175b16a1768a9f08 SHA-256: 7bb9420a19e7aa79615e45a2a790b0f277b077dddd16b88bc1055f9d9a73772b
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 0.9996

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://bologen.ru/wix?keyword=bradford+white+electric+water+heater+service+manual PDF link annotation
    • http://raicen.com/74625181138nv7w0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404310/normal_5ffe17c644ae9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365552/normal_602943078221c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483359/normal_60188702891c6.pdfIn PDF document text
    • https://cdn.sqhk.co/fipimomozuk/QTXihYh/local_music_player_no_ads_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/nebinefis/gcOLoij/zombie_age_2_hack_apk_2019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375352/normal_6039d48b0181c.pdfIn PDF document text
    • http://lalashoppen.online/the_hunger_games_mockingjay_part_2_full_movie_free_download_in_hindi2f4vx.pdfIn PDF document text
    • https://cdn.sqhk.co/wajuletixex/gg2pOgc/libaruvofaluxoluredum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499319/normal_6018f8f7a68eb.pdfIn PDF document text
    • http://pokanupat.iblogger.org/75477282572.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387566/normal_6001717f88ca0.pdfIn PDF document text
    • http://pitushok.space/veneer_eroded_fontoy9ix.pdfIn PDF document text
    • http://flymoney.net/country_2_step_rap_songjhv89.pdfIn PDF document text
    • http://drive4mclaneeffingham.com/pearson_texas_algebra_2_form_k_answerst1i7e.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/b58f01e7-ac8c-4915-91c4-365a3a50fcf8/how_to_calculate_gold_loan_interest_in_indian_bank.pdfIn PDF document text
    • http://suwagovi.epizy.com/how_to_build_a_mnemonics_memory_palace.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8151b009-7006-4e8a-a9af-c58b6416b467/68641401357.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc8c4692-715f-4268-b62d-c571a67203c6/25799794725.pdfIn PDF document text
    • http://bumilamufitilu.epizy.com/authorisation_dealer_certificate_format_in_word.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acb8d22c-60fa-41e5-a933-0812b1acc7ae/miller_syncrowave_180_sd_tig_torch.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_off0000e80f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE80F 5460 bytes
SHA-256: a52c8f4383cc33ac88c12a2a9d8b88ce7222ca882390642a59bfa2a6cec452af
font_01_sfnt_off0000fa97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA97 10640 bytes
SHA-256: dd52c229e674e5cfee6692cda67e8f6532be49207e8aa0fc870ddafa795e10ef
font_02_sfnt_off00011f22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F22 17704 bytes
SHA-256: 1540cf1aee614f7bdb861a6ceb09d0a97705cf06a7caba9b5449b1a2874f7077

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