Malicious PDF — malware analysis report

Static analysis result for SHA-256 c46fc62f795854b7…

MALICIOUS

PDF

82.2 KB Created: 2021-03-19 10:51:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6ea5773c43a8584fe6839e5f334c0191 SHA-1: 92b5235fce8afdcf4af3c549db466d3139eb3378 SHA-256: c46fc62f795854b729f3fb56816b8fa05aff49e996f09866dba9ca725de2dd8a
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 0.9998

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://jottigo.ru/wix?keyword=doodle+god+unblocked+games+6969 PDF link annotation
    • http://feldhaus-klinker-plitka.ru/conair_clipper_seti0z7m.pdfIn PDF document text
    • https://zopodiwozexuma.weebly.com/uploads/1/3/4/7/134737972/1c04ca92c.pdfIn PDF document text
    • https://burodinijosago.weebly.com/uploads/1/3/0/8/130813714/2262621.pdfIn PDF document text
    • http://particulier-societegenerale.xyz/mahindra_finance_car_loan_noc_formatz3qw2.pdfIn PDF document text
    • http://changepass.online/pazofafepafdjqu3.pdfIn PDF document text
    • https://kigadipokifexi.weebly.com/uploads/1/3/0/8/130813079/pivibewazami-vubomebijoki-webovowumum-mizazet.pdfIn PDF document text
    • http://interior.estate/1439893753266ic8.pdfIn PDF document text
    • http://ourfanz.com/spider_man_games_free_online_play_now2m09q.pdfIn PDF document text
    • http://meetsol.xyz/can_you_clean_a_snowblower_carburetor_without_taking_it_apartz2en2.pdfIn PDF document text
    • http://lessonsonline.site/safety_1st_digital_thermometer_manualkefxd.pdfIn PDF document text
    • http://questotzvezd.space/duneritetenoxiti8y86j.pdfIn PDF document text
    • http://mujepojubum.22web.org/takezekomegabuliz.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/f2dad0f0-1eff-4730-b98e-bdb7c816122d/11715742438.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb5abd53-c3fb-4c09-8d59-5992c4dc6311/the_spectacular_now_full_movie_download_with_english_subtitles.pdfIn PDF document text
    • http://lolofekigosot.epizy.com/firebase_analytics_custom_events_android.pdfIn PDF document text
    • http://jirizaxewusi.epizy.com/core_practice_7a-_8_crossword_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a1bedee-c859-4351-8046-4366d4172365/22726147772.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd1c617d-e8a6-4929-88ce-228fdf2e0690/what_is_the_meaning_of_auld_lang_syne_poem.pdfIn PDF document text
    • http://mibiravotawuga.epizy.com/zenilokiruxigiwomo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/196bf084-efb8-4097-affc-0b83e9ffeae5/70322799120.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_off0001014b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1014B 5676 bytes
SHA-256: 22b83800aa5b35426c0dac8d6db86e02d581ac4b5e8d2dd5a767bdf274328c6f
font_01_sfnt_off0001148d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1148D 11384 bytes
SHA-256: 8855648da5174657ac0284f312d75be8660e897eb2f86a1a6357243a895d38c8

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