Malicious PDF — malware analysis report

Static analysis result for SHA-256 31bd418ed8346e26…

MALICIOUS

PDF

71.3 KB Created: 2021-03-07 06:44:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 24087c42ab34ef867dffe89b7f99ba16 SHA-1: 046a7ba07e1ae0593fd0e6b6642089bc464668e5 SHA-256: 31bd418ed8346e26b88792eb21394f9eeb4e91663996f9873db87560a047926e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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.
  • 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://jumiwimov.ru/award?keyword=harry+potter+book+6+barnes+and+noble PDF link annotation
    • https://cdn.sqhk.co/tedubifo/gdmlbhi/16989438895.pdfIn PDF document text
    • https://cdn.sqhk.co/pajokiman/Q4egdgf/lumu_light_meter_amazon.pdfIn PDF document text
    • http://goodsun.space/83532955271qehy2.pdfIn PDF document text
    • http://pasendapp.online/8042956640310b4z.pdfIn PDF document text
    • https://zimemomikinipex.weebly.com/uploads/1/3/5/3/135347479/jilexo.pdfIn PDF document text
    • https://jutegejedexugak.weebly.com/uploads/1/3/5/3/135384922/5376933.pdfIn PDF document text
    • https://pexajutamog.weebly.com/uploads/1/3/4/7/134759810/nifuwaxevonito.pdfIn PDF document text
    • https://cdn.sqhk.co/lenubire/h2hai7Z/rizodoliwolepurekew.pdfIn PDF document text
    • https://cdn.sqhk.co/gepabafi/bbfNoqx/fuxiniwararegaxurek.pdfIn PDF document text
    • https://cdn.sqhk.co/kajurineg/heiagcK/opera_mini_fast_web_browser_uptodown.pdfIn PDF document text
    • http://duplicwcnj.space/adivasi_gane_dj_sound3i84f.pdfIn PDF document text
    • https://cdn.sqhk.co/bosesegivu/Ugdjcjg/tambourine_radio_not_playing.pdfIn PDF document text
    • https://gupapuna.weebly.com/uploads/1/3/4/7/134726568/9456612.pdfIn PDF document text
    • https://cdn.sqhk.co/bofogarabu/oghvhfZ/84187455884.pdfIn PDF document text
    • http://ropilelerenub.iblogger.org/16035659895.pdfIn PDF document text
    • http://sesalon.xyz/gofunori3ovci.pdfIn PDF document text
    • http://gilogaviteno.iblogger.org/ropafigetawitebovoxu.pdfIn PDF document text
    • https://cdn.sqhk.co/wijelukifap/5igjiun/superhero_mod_apk_version_2._0.pdfIn PDF document text
    • https://cdn.sqhk.co/bilexodofose/jcifyXS/94587830268.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mogewatiside.epizy.com/gukafavuforemogogumovawi.pdfIn PDF document text
    • http://juvemekexiki.rf.gd/hydrogen_sulphide_safety_data_sheet.pdfIn PDF document text
    • http://juwebud.epizy.com/adreno_gpu_profiler.pdfIn PDF document text
    • http://xejonitofopim.epizy.com/bhaktamar_stotra_lyrics_free.pdfIn PDF document text
    • http://jipobemimojogot.rf.gd/adblock_plus_per_opera.pdfIn PDF document text
    • http://suzubozoze.rf.gd/animal_song_320kbps_pagalworld.pdfIn PDF document text
    • http://gibilumopujilot.epizy.com/c_programming_interview_questions_for_freshers.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_off0000dab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB3 5376 bytes
SHA-256: 76b359c204f2bfcd895f7af94ca0a55bdf29aeeaeeb9dc92522407947abf9588
font_01_sfnt_off0000ed05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED05 10008 bytes
SHA-256: 31d5a8a465315aafe09fb0fe43adbc04a9c57bc2b6bf611a2217f8d48398b516

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