Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaf4987397c75890…

MALICIOUS

PDF

80.6 KB Created: 2021-04-14 19:48:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d6196dccd32cca6c9a993727a81c6e8b SHA-1: 46aab7e1e3990d9808420b110a102480f08ca661 SHA-256: aaf4987397c75890705c9faa215515319e9e7a199d4c03a0dc15750f5b5dc575
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://leonvi.ru/strik?utm_term=craftsman+12+inch+sliding+compound+miter+saw+parts PDF link annotation
    • http://rivepozepuxar.mywebcommunity.org/2019_jeep_grand_cherokee_owners_manual_for_sale.pdfIn PDF document text
    • http://duwelizub.mywebcommunity.org/xujifebufadatetadarugo.pdfIn PDF document text
    • http://nivawegokex.22web.org/antidepressant_drugs_list.pdfIn PDF document text
    • http://vumonivaxozutod.mypressonline.com/guide_to_networking_essentials_7th_edition_free_download.pdfIn PDF document text
    • http://ryukzak.digital/how_to_clean_an_lg_inverter_direct_drive_washing_machinev4feu.pdfIn PDF document text
    • http://fijigud.22web.org/blockchain_revolution_don_tapscott_free.pdfIn PDF document text
    • http://zoomita.space/how_to_open_samsung_air_conditioner_remote_control9i35d.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/buganabowumujef/les_vetements_en_anglais.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/615fc326-02d7-4481-98b4-35369a1e542e/wujufanakolesobus.pdfIn PDF document text
    • http://volomuladifute.rf.gd/christopher_hitchens_hitch_22.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a72be0b-524a-494c-a65a-6ed3b3aa7633/4796027893.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59cabe21-9d38-42e2-877b-fa9797d25b7e/does_attack_on_titan_have_a_dub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1778e643-abc1-4389-bbe9-1327b6125e83/good_conference_call_ice_breakers.pdfIn PDF document text
    • http://vuxepogi.atwebpages.com/medical_biochemistry_textbook_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wovisak/video_player_free_for_mac.pdfIn PDF document text
    • http://zefofipavefo.rf.gd/fenagibukojodarusuwax.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/how_do_you_light_the_pilot_on_a_jotul_gas_stove.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/sezedizukosaragolog.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/2018_bear_archery_approach_manual.pdfIn PDF document text
    • http://damowepoko.myartsonline.com/fiwupil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e4bd389-f0e1-488c-8ec8-709cd9186d28/kilasomilevakojudakot.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_off0000f802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF802 5748 bytes
SHA-256: 5c125b5ae485f83248d58bc977fe608cddb01369c718fde7fc021faef4981586
font_01_sfnt_off00010b80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B80 12176 bytes
SHA-256: a97c53801e3dfc0dd2abc4ea7c79e36faaa7d9aed3a57605f872b53e11559546

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