Malicious PDF — malware analysis report

Static analysis result for SHA-256 9caaf899024f5d6d…

MALICIOUS

PDF

72.4 KB Created: 2021-04-01 00:00:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 8db7efa208fe93aa959ff80de98ef4ec SHA-1: 1658f12ba6098c8a62bd9f5f1ad1a71f00b6830d SHA-256: 9caaf899024f5d6d0abad88f6c0f34fa6c3506cab8eabd8aadec93396708747d
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 0.9993

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://crophysi.ru/wix?keyword=max+factor+pan+stick+13 PDF link annotation
    • http://tuzogat.sportsontheweb.net/ruvewapeza.pdfIn PDF document text
    • https://cdn.sqhk.co/lilodipu/ichijhL/nova_launcher_app_drawer_background_color.pdfIn PDF document text
    • https://cdn.sqhk.co/tavimuxeju/4hhggki/sargam_alankar_in_english.pdfIn PDF document text
    • http://wisatemubudu.medianewsonline.com/how_to_bleach_splatter_clothes.pdfIn PDF document text
    • http://pexarinolal.mypressonline.com/how_to_change_date_and_time_on_timex_marathon_watch.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvebopeweb/eN5E3QX/50111536414.pdfIn PDF document text
    • https://cdn.sqhk.co/bimowikosaru/hrja3ge/tajonibewimusagipap.pdfIn PDF document text
    • http://kizuberuzusa.iblogger.org/printable_game_of_life_cards.pdfIn PDF document text
    • https://cdn.sqhk.co/xojugako/yWtigPg/block_the_phone_app_android.pdfIn PDF document text
    • https://cdn.sqhk.co/xenaporo/aHAjhia/how_to_get_titan_quest_ragnarok_xbox_one.pdfIn PDF document text
    • https://cdn.sqhk.co/gizukakom/XgiS8ie/zagopa.pdfIn PDF document text
    • https://cdn.sqhk.co/tigixexaxi/ZxZP7jg/business_international_group_poznan.pdfIn PDF document text
    • https://cdn.sqhk.co/ligumorik/giiOBX4/albinisme_oculaire.pdfIn PDF document text
    • http://zixonolugajona.iblogger.org/42776851765.pdfIn PDF document text
    • https://cdn.sqhk.co/jutafegobexe/hdMphi8/bandicam_download_crack.pdfIn PDF document text
    • http://virinuwatun.iblogger.org/35540570589.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sijadogif.atwebpages.com/applicant_letter.pdfIn PDF document text
    • http://duliwijedij.rf.gd/ancillary_services_in_tourism.pdfIn PDF document text
    • http://dodarululi.epizy.com/apologize_letter_formal.pdfIn PDF document text
    • http://tutivute.epizy.com/angry_birds_transformers_gem_codes_2018.pdfIn PDF document text
    • http://fafanuzumamowaz.epizy.com/88519967643.pdfIn PDF document text
    • http://galojuxutiwas.epizy.com/new_bollywood_movies_online_watch_and.pdfIn PDF document text
    • http://widadipadiv.epizy.com/183902525.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_off0000d8c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C7 5332 bytes
SHA-256: 4f958d8ed243305532c4fa438ecd25c8122325a9290e15a738902b42991088a0
font_01_sfnt_off0000eb19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB19 12000 bytes
SHA-256: 61f8c6a230ab339c5210e5d574809631267830c80620124fd0a85521d163dba2

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