Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8ef4942eaa20cff…

MALICIOUS

PDF

76.1 KB Created: 2021-04-04 12:50:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1cb626ede45af2d84e0b7d52b77200dc SHA-1: 82cfa2383878f6b96fe330e3aa2b2b9344259061 SHA-256: f8ef4942eaa20cffabbac03ddc173b0779c714518518fd5d739bdb1725459ff9
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-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://botokaw.ru/123?utm_term=bus+rush+game++karna+hai PDF link annotation
    • http://laxogapajoze.getenjoyment.net/nausea_jean_paul_sartre.pdfIn PDF document text
    • http://sajiwurejedetu.sportsontheweb.net/nigutapugawanulekogep.pdfIn PDF document text
    • http://rasezatoxefu.mygamesonline.org/bronchiolite_chez_le_nourrisson.pdfIn PDF document text
    • http://itwow.info/how_to_pair_bose_wave_soundtouchlirwj.pdfIn PDF document text
    • http://cabinetshub.xyz/723731828106m0tk.pdfIn PDF document text
    • http://interplast.ru/kifunajaxujogirikafovamoz8cxau.pdfIn PDF document text
    • http://memiwuv.mygamesonline.org/dokamizikojadimatitimuk.pdfIn PDF document text
    • http://legendnat.space/last_one_standing_lyrics_simple_plang219o.pdfIn PDF document text
    • http://onsideball.info/lumulokumifanarirh0hrd.pdfIn PDF document text
    • http://doweryklkq.space/671437580931ia1o.pdfIn PDF document text
    • http://serdyukov.pro/python_programming_ebook_free_downloadkyk8y.pdfIn PDF document text
    • https://cdn.sqhk.co/gulizate/Tfgege3/blendoku_2_android.pdfIn PDF document text
    • https://cdn.sqhk.co/verexumifo/Omidujb/nba_2k20_soundtrack_update_4.pdfIn PDF document text
    • https://cdn.sqhk.co/pedidagow/xvhghaG/jetukopaj.pdfIn PDF document text
    • http://alkostore.xyz/64999543607l759k.pdfIn PDF document text
    • https://cdn.sqhk.co/tivuzofep/JhcNjgs/96832713342.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/sesijesule/blackberry_link_for_pc_filehippo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48c159fc-85f3-48f5-b401-5cc7be070e9c/what_is_universal_design_in_human_computer_interaction.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb205bcc-223a-4ae6-9e76-6f13a0a9db30/kotuf.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/turtle_beach_px22_inline_amplifier.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/702c9652-d581-43ca-8216-ce4a99ca20ca/are_they_still_making_games_for_ps_vita.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2b700d7-e8a0-4b18-9c4b-4dd9a5db4200/breville_bov800xl_thermal_fuse_assembly.pdfIn PDF document text
    • https://s3.amazonaws.com/masevewi/how_to_pray_for_peace_in_the_home.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/87760625762.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/043057c7-9814-4517-ab32-a86947c06758/how_we_decide_lehrer.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_off0000e35b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE35B 5180 bytes
SHA-256: 0c650210ed139128dd83a6613a845dbbb6c439ef5235528f5a3f7620d1ee5262
font_01_sfnt_off0000f4ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4CE 20692 bytes
SHA-256: 0adcb13e8b3207e03ad05da6a7cca001e115bb505ad8a1e7f50c8750fbd11cf4

Open this report in the interactive analyzer, or submit your own file for analysis.