Malicious PDF — malware analysis report

Static analysis result for SHA-256 34f904cc6415756a…

MALICIOUS

PDF

76.6 KB Created: 2021-02-23 04:19:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8ffaea3e4706512e5ed53f82957eecce SHA-1: b8ad6e62da5c836ea0a5f1007efbeda57c770107 SHA-256: 34f904cc6415756a8895885bed207a5b6acae7596c47cd83c88fb1a65c89b83e
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jottigo.ru/123?utm_term=asus+ve278h+hz PDF link annotation
    • https://wibipujesotut.weebly.com/uploads/1/3/1/3/131398272/tikimivagez.pdfIn PDF document text
    • https://cdn.sqhk.co/gejixoneku/bsggDhf/stumble_meaning_in_the_bible.pdfIn PDF document text
    • https://cdn.sqhk.co/ragejeli/lJehcvk/4091010705.pdfIn PDF document text
    • https://linajijokib.weebly.com/uploads/1/3/4/0/134000065/wapuzadikiwanovuz.pdfIn PDF document text
    • https://wamogipoko.weebly.com/uploads/1/3/0/7/130739383/3942add2455f.pdfIn PDF document text
    • https://pafuxasakilufa.weebly.com/uploads/1/3/5/3/135327400/939b9147.pdfIn PDF document text
    • https://guxojifupu.weebly.com/uploads/1/3/1/4/131438233/rederuzirip_kojid_sumud_wuzopuwipupe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jemibare.epizy.com/the_sims_3_world_adventures_installation_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/adobe_indesign_cs6_mac_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/carrom_pool_mod_apk_3._0_0.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/automatic_battery_charger_app.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/abstract_algebra_an_introduction_hungerford.pdfIn PDF document text
    • https://s3.amazonaws.com/lolijexejomak/probability_and_random_processes_3rd_edition_solutions.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/kindle_unlimited_app.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/math_multiplication_worksheets_grade_8.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_off0000ee1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1A 4940 bytes
SHA-256: 66ae1d745d6a1e0af32fbbdbca7eba17c606c0dce9ae7c4daca4739a1e3acd94
font_01_sfnt_off0000ff05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF05 11636 bytes
SHA-256: 9fe59e985bb4191009a3692c67d412ee5bf73d4031cad7d32e1d5be055ca6de6

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