Malicious PDF — malware analysis report

Static analysis result for SHA-256 ace4d1b67974044d…

MALICIOUS

PDF

78.3 KB Created: 2021-03-28 05:57:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e1cf1bdecaeab4ed5f0bf59344984191 SHA-1: c0e18ab2e3705a423513dca08cdf5a6c2a065d72 SHA-256: ace4d1b67974044d628c0730c1953d53b0310827b4629bdd6b14cecd626cc436
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 0.9990

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/123?utm_term=klm+lost+baggage+report PDF link annotation
    • https://bamutemo.weebly.com/uploads/1/3/2/6/132681362/sisolopum.pdfIn PDF document text
    • http://thefortykuti.com/how_to_program_a_viper_car_alarm_remote1fpgr.pdfIn PDF document text
    • https://cdn.sqhk.co/legikowe/II7Kge5/cross_birds_lenormand.pdfIn PDF document text
    • http://rewita.fun/zejuxutexidibejesededwv3s8.pdfIn PDF document text
    • http://losinglotterynumbers.com/kivajumabufiwetroj7.pdfIn PDF document text
    • http://twirlini.com/kosudifedw9qal.pdfIn PDF document text
    • http://begemotiks.fun/afk_arena_mod_apk_unlimited_moneywxzlu.pdfIn PDF document text
    • http://storeeuro.info/english_dictionary_oxford_free7q43i.pdfIn PDF document text
    • http://biotringel.shop/paduwasife0doua.pdfIn PDF document text
    • http://lnstagramcentre.net/what_is_thermal_energy_storage_materialssup87.pdfIn PDF document text
    • https://cdn.sqhk.co/gozolijitow/jaghPjh/stickman_basketball_addicting_games.pdfIn PDF document text
    • http://begemotiks.space/free_estimate_templateqxbo2.pdfIn PDF document text
    • http://gratoramaa.space/455223943925w1j9.pdfIn PDF document text
    • http://neuroncraft.online/57683568435lkm39.pdfIn PDF document text
    • https://sazunanu.weebly.com/uploads/1/3/4/5/134596286/mabimujik.pdfIn PDF document text
    • http://egosikenclub.com/gigabyte_ga-x58a-ud3r_rev_1.0_manualpfa9m.pdfIn PDF document text
    • http://lnstagram-blue-badge-form.com/18705899535y7l3i.pdfIn PDF document text
    • https://cdn.sqhk.co/zenipijujate/bhbdhh9/noved.pdfIn PDF document text
    • https://mawajajapok.weebly.com/uploads/1/3/4/3/134353668/gupad-defobin-fatelotako-judud.pdfIn PDF document text
    • https://titawijuneve.weebly.com/uploads/1/3/4/0/134012454/3483510.pdfIn PDF document text
    • http://habercigo.com/cuadernillo_de_matematicas_sexto_grado_resueltofd1vr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://gibonizurof.rf.gd/acuerdos_de_paris_cambio_climatico.pdfIn PDF document text
    • http://zusubobanu.rf.gd/coefficient_of_determination_interpretation.pdfIn PDF document text
    • http://zipituvopedisi.rf.gd/waltzing_with_bears.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B4 4884 bytes
SHA-256: d08d98c53707c1101f8dfd61e75b8851e7c6d661f993bfe86b60a7023be078f5
font_01_sfnt_off0000f752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF752 10900 bytes
SHA-256: 60f87151cac859e242b1a69135b5cc2d8f101571cc4555159f309007b3bbe05a
font_02_sfnt_off00011c8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C8D 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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