Malicious PDF — malware analysis report

Static analysis result for SHA-256 11ff2505493d67b2…

MALICIOUS

PDF

77.5 KB Created: 2021-02-26 23:42:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: cd62594343d41a9d024e2e3c3e80341b SHA-1: 5b7a42e3fd8663752cdbfd100a8d1b1b7f00bdf9 SHA-256: 11ff2505493d67b2afec8b50d1cbcb55aa43062eb374dfd13e5938f3bfcbec94
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/123?utm_term=what+to+do+when+your+keurig+stops+working PDF link annotation
    • http://robinmani.site/whatsapp_messenger_for_blackberry_boldrj54e.pdfIn PDF document text
    • https://likixolokezixi.weebly.com/uploads/1/3/0/7/130738950/60f0bee5b.pdfIn PDF document text
    • https://cdn.sqhk.co/sufokorume/LqsJjdx/37116810978.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459324/normal_60303a5bb2546.pdfIn PDF document text
    • http://winoraama.fun/turbo_wheels_flip_over_carrmw9u.pdfIn PDF document text
    • http://wiinorama.fun/bissell_pet_pro_carpet_cleaner_user_guideuk8py.pdfIn PDF document text
    • https://cdn.sqhk.co/moviferu/fheigji/blaze_and_the_monster_machines_dress_up.pdfIn PDF document text
    • https://jeluxipofike.weebly.com/uploads/1/3/4/4/134490416/digakotusof_zivofasanu_nuset_rebanodazam.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404112/normal_600064422f161.pdfIn PDF document text
    • https://dirifulezidume.weebly.com/uploads/1/3/2/7/132740871/zedeginulegezakofe.pdfIn PDF document text
    • https://vufuvato.weebly.com/uploads/1/3/4/7/134718288/berevowedow.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/xovajukoxin/ameren_illinois_rebate_form.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/surokagobofujipogasugija.pdfIn PDF document text
    • https://s3.amazonaws.com/wizakokowe/avatar_3d_movie_free_in_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/sogovekevi/focusrite_scarlett_2i2_gen_2_studio_pack.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_off0000f289.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF289 5460 bytes
SHA-256: 9f6987a6f8839e150df3559fe5a53fef9fc00ffc85ccbb41135ee7aee698299d
font_01_sfnt_off00010538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10538 10412 bytes
SHA-256: 2997d928deb36467c0be6c265706e1b95828c46127385d3d94843ae608efc17c

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