Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1c6f00aea5b30b0…

MALICIOUS

PDF

97.8 KB Created: 2021-04-28 14:08:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9167bd157d6b44c3ea9d97807a6b4122 SHA-1: 9fc0cfede13e33145863d0c35e3edacce39e1a02 SHA-256: d1c6f00aea5b30b087a563bc756bf6f9605f675aef3c74b9c5f0c3243f3b78fc
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 0.9994

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/strik?utm_term=skyrim+best+order+to+visit+cities PDF link annotation
    • http://rimka.xyz/philips_universal_remote_control_vizioeh33v.pdfIn PDF document text
    • https://cdn.sqhk.co/nurafurofopu/ajhhiie/32008840843.pdfIn PDF document text
    • http://wenatal.getenjoyment.net/water_cycle_experiment.pdfIn PDF document text
    • http://reawont.online/le_marais_paris_restaurant_guide917uo.pdfIn PDF document text
    • http://fapasevusiledap.mygamesonline.org/barron_s_ielts_5th_edition_free_download.pdfIn PDF document text
    • http://golden-charm.com/71333052453xxh9h.pdfIn PDF document text
    • https://cdn.sqhk.co/wosinuwukabu/bMyhaS5/73997918072.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzosexiwugu/hUWiaAy/51712834893.pdfIn PDF document text
    • http://drilltech.info/76701742723dnb0q.pdfIn PDF document text
    • http://gokojun.scienceontheweb.net/xonivoru.pdfIn PDF document text
    • https://cdn.sqhk.co/zuzipogowita/hFiahhA/92242578445.pdfIn PDF document text
    • https://cdn.sqhk.co/kotolodegag/wBLgcij/wasavav.pdfIn PDF document text
    • http://lulopoboxefon.scienceontheweb.net/what_does_cutting_for_stone_mean_in_the_hippocratic_oath.pdfIn PDF document text
    • https://cdn.sqhk.co/zexupibo/jiggn7d/knightfall_armor_games.pdfIn PDF document text
    • http://playmarket-online.com/botewoyds52.pdfIn PDF document text
    • http://getfreecreditreport.info/rusetivawolatudujonaju26w5.pdfIn PDF document text
    • http://floradoma.net/zobebibifagoktx0ef.pdfIn PDF document text
    • http://urro-hu.com/how_to_fix_no_dial_tone_on_all_phones_issuejkp2n.pdfIn PDF document text
    • https://cdn.sqhk.co/retesixabe/hijiL7A/dreamers_by_yuyi_morales.pdfIn PDF document text
    • http://biwumani.mywebcommunity.org/67107061388.pdfIn PDF document text
    • http://khareedforosh.com/jilos05t8l.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kasedabinat.rf.gd/pidijuwozalezimatabusesu.pdfIn PDF document text
    • http://redoxewesusu.epizy.com/14003915088.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_off0001442c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1442C 5312 bytes
SHA-256: 3708e68066acf0f79b514cc81f6d034eb179a6415cd824fe7eaa194e4c5e3072
font_01_sfnt_off00015636.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15636 10472 bytes
SHA-256: d2b4097ab75b29849958471f047dd89b001920069d2eafcc43341cc9b0fecac8

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