Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed26eb48632a7cd1…

MALICIOUS

PDF

77.6 KB Created: 2021-03-06 13:24:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: a0953681a9627cb0f30714dc05b68983 SHA-1: 9462556e71795bb753ad76acbd5687eef1615dd7 SHA-256: ed26eb48632a7cd1def1bf3150576d293ab88dfca94d3da3feb45054a9bf3f11
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://dafemum.ru/123?utm_term=arduino+uno+r3+board+dimensions PDF link annotation
    • https://cdn.sqhk.co/dubutemaruxu/IibhdC2/nebijolat.pdfIn PDF document text
    • https://cdn.sqhk.co/dasadogiso/hi1K60s/rikazonikumodojefimasux.pdfIn PDF document text
    • http://dom-bita.org/94331055010vo8gy.pdfIn PDF document text
    • http://0fruits.space/choice_of_kung_fu_mod3x3up.pdfIn PDF document text
    • http://filanion.online/integral_calculus_asin9eoy3.pdfIn PDF document text
    • https://cdn.sqhk.co/kizulajeli/oC7ghf9/mine_survival_mod_apk_unlimited_life.pdfIn PDF document text
    • https://cdn.sqhk.co/faxenukev/ghgSibN/monkey_racing_mod_download.pdfIn PDF document text
    • http://fopekoriw.sportsontheweb.net/how_to_repair_a_dyson_battery.pdfIn PDF document text
    • https://cdn.sqhk.co/rifibimilo/jejejeg/ice_dragon_wallpaper_hd_android.pdfIn PDF document text
    • http://voiprormul.xyz/vekatemaleposagdedq1.pdfIn PDF document text
    • https://cdn.sqhk.co/sasibasodiwu/igdvjig/what_happened_to_bugsy_siegel_s_daughters.pdfIn PDF document text
    • http://vuzopozakobepe.22web.org/vorusunemamupegafejofono.pdfIn PDF document text
    • http://nutusugeralinet.mypressonline.com/civ_6_gathering_storm_sale_steam.pdfIn PDF document text
    • https://cdn.sqhk.co/remimidotomi/LCKijgi/battle_angel_alita_last_order_volume_19_online.pdfIn PDF document text
    • https://cdn.sqhk.co/netimupoxojo/Ihbjfii/gokerupijunowuzok.pdfIn PDF document text
    • https://cdn.sqhk.co/zikegasenar/VicPdge/26360918375.pdfIn PDF document text
    • http://unityfree.xyz/999083384669pcib.pdfIn PDF document text
    • http://bikefevogob.iblogger.org/vtech_cs6114_-_cordless_phone_-_dect_6.0.pdfIn PDF document text
    • http://gisoboxizaza.mygamesonline.org/graco_milestone_all-in-one_car_seat_user_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/vezukefuza/jbDjj3j/two-_player_games_unblocked.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sakonolib.rf.gd/fokasovupomi.pdfIn PDF document text
    • http://besevinoferoza.epizy.com/antebellum_period_reforms.pdfIn PDF document text
    • http://wabanatebaxu.epizy.com/fill_in_100s_chart_printable.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_off0000f446.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF446 5232 bytes
SHA-256: b6aff6eeb20e5c2ede37bf3a910b606f2207901c97359401e6f1177a45195cb5
font_01_sfnt_off000105f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F4 10280 bytes
SHA-256: ecdc1806481105ed622d1835d0276edcccf225320e596d20f102e080cc1eb0e9

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