Malicious PDF — malware analysis report

Static analysis result for SHA-256 12d6337841fff737…

MALICIOUS

PDF

77.6 KB Created: 2021-04-29 22:50:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 3ef26b6b5b0be072b54fe1fea231ad28 SHA-1: 984e7759213e47b43a2007089fac7dfa2f85cd73 SHA-256: 12d6337841fff737a24b8fe0a96e0dad69cfa61c3bc82d9452a7fd319c95526f
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://jumiwimov.ru/strik?utm_term=john+deere+x320+owners+manual PDF link annotation
    • https://cdn.sqhk.co/tosuwukiwate/Kgfrzje/napivubovomuzakukes.pdfIn PDF document text
    • http://servisvds.ru/huskee_lt4200_steering_gearjwkwk.pdfIn PDF document text
    • http://bukapim.mywebcommunity.org/american_college_of_sports_medicine_book.pdfIn PDF document text
    • http://rujewazaxijaza.sportsontheweb.net/lymphatic_system_file_download.pdfIn PDF document text
    • http://datiwufirul.medianewsonline.com/nibuximedolimax.pdfIn PDF document text
    • https://cdn.sqhk.co/xogodapap/AiaDihF/vuzikapilejan.pdfIn PDF document text
    • http://vadosixajobirug.mygamesonline.org/42456200263.pdfIn PDF document text
    • http://witaxolexigabi.mywebcommunity.org/business_management_books_for_shs.pdfIn PDF document text
    • http://odebayitrafikhizmeti.com/academic_ielts_writing_task_2_sample_answers0dack.pdfIn PDF document text
    • http://airned.ru/dometic_air_conditioner_b3200_shroudwz5yf.pdfIn PDF document text
    • http://antonioit.fun/74726223437p1jz6.pdfIn PDF document text
    • http://sewakasatixori.medianewsonline.com/gajubofobakufamupamofob.pdfIn PDF document text
    • https://cdn.sqhk.co/dodazija/Cynhcjh/repost_for_instagram_app_free.pdfIn PDF document text
    • http://it50disconto.pro/25530416419efv6a.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/selivuvumepaveb/tatuvewetodaledota.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/25348765570.pdfIn PDF document text
    • http://majezomisi.myartsonline.com/93344956987.pdfIn PDF document text
    • http://legokejapo.atwebpages.com/personality_traits_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/fractions_decimals_and_percentages_worksheets_year_9.pdfIn PDF document text
    • http://pulutugorivexek.atwebpages.com/how_long_is_navy_sere_training.pdfIn PDF document text
    • http://duxepivol.myartsonline.com/nemafukabipixom.pdfIn PDF document text
    • http://kegigija.atwebpages.com/8411517790.pdfIn PDF document text
    • http://vawanumezal.onlinewebshop.net/muwuruvitur.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/the_love_song_of_j._alfred_prufrock_definition.pdfIn PDF document text
    • http://furunes.onlinewebshop.net/medical_certificate_for_govt_job.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_off0000f037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF037 5652 bytes
SHA-256: eb7f10e84fbd6d326d5630bee521c645b18bdf76d9a4f3036b8ead35f85e03d6
font_01_sfnt_off00010356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10356 11044 bytes
SHA-256: 4c02322c358d1ec135b9a1a8f62cd5e530dd7cb1f2faaded318c5770b6a4d8f6

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