Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb480f32ae1826ec…

MALICIOUS

PDF

84.5 KB Created: 2021-03-03 06:06:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 1ccdaac8d4cd3b882915ecc8204a54c5 SHA-1: 9ed41101d7064e6e0299103227604ade938b539b SHA-256: eb480f32ae1826ec60b6612739df1b8d5cd820ced05624265d32521e415046e6
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. It contains numerous embedded URLs, many pointing to disposable hosting or link farms, suggesting an attempt to redirect users to malicious sites. The presence of external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicate a strong likelihood of phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://gimoguvi.ru/123?utm_term=learn+r+programming+bioinformatics PDF link annotation
    • http://xuzobinemipivor.mygamesonline.org/jeux_de_carte_a_deux_double_solitaire.pdfIn PDF document text
    • http://safijejog.mygamesonline.org/jajig.pdfIn PDF document text
    • https://baxezakeva.weebly.com/uploads/1/3/1/4/131406046/lefusaxepas.pdfIn PDF document text
    • http://xorimomupajo.scienceontheweb.net/allowables_by_nikki_giovanni_analysis.pdfIn PDF document text
    • https://cdn.sqhk.co/fetumamuv/jcjedPM/how_to_get_more_minigames_on_fishdom.pdfIn PDF document text
    • http://kejumazinanu.mywebcommunity.org/86572573906.pdfIn PDF document text
    • http://dotekebenutedex.scienceontheweb.net/killing_joke_batman_reddit.pdfIn PDF document text
    • https://cdn.sqhk.co/jiguluzufuwa/1LUl1Hc/velodyne_lidar_stock_price_target.pdfIn PDF document text
    • http://gejesixave.scienceontheweb.net/hp_c4480_error_incompatible_print_cartridges.pdfIn PDF document text
    • https://cdn.sqhk.co/nedovipirumu/fjc2mXl/best_4k_hd_gaming_wallpapers.pdfIn PDF document text
    • http://midikakuvekume.mywebcommunity.org/35104563258.pdfIn PDF document text
    • https://vijunisuli.weebly.com/uploads/1/3/0/7/130775087/paxux.pdfIn PDF document text
    • https://cdn.sqhk.co/nakolore/ihhhyih/idle_racing_tycoon_car_games_apk.pdfIn PDF document text
    • https://nuridofif.weebly.com/uploads/1/3/4/2/134234753/608829.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://tobikinos.onlinewebshop.net/fisher_price_rockn_play_sleeper_replacement_parts.pdfIn PDF document text
    • http://jijojigig.epizy.com/xafasidibuzevut.pdfIn PDF document text
    • http://raxajabidadida.onlinewebshop.net/the_holy_quran_book.pdfIn PDF document text
    • http://vejegaba.atwebpages.com/folokid.pdfIn PDF document text
    • http://ziwivalotezeti.rf.gd/bridal_chorus_chords.pdfIn PDF document text
    • http://naxutokotegikad.epizy.com/novutojowem.pdfIn PDF document text
    • http://vimixof.onlinewebshop.net/pegaxuse.pdfIn PDF document text
    • http://bonizeza.epizy.com/itv3_tv_listings_tvguide._co._uk.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_off0000fe79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE79 5172 bytes
SHA-256: b82c1722f330a4a6947dd8e0f1ec38a4e764e83add16478212f86ede9b0ca758
font_01_sfnt_off00010fee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FEE 10720 bytes
SHA-256: 274f20fc0d8e3cf222eddaec3d2fe421eb0ca34edca7c81199fe2edc0c7ed58b
font_02_sfnt_off00013468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13468 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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