Malicious PDF — malware analysis report

Static analysis result for SHA-256 e01d5951c65c37db…

MALICIOUS

PDF

80.3 KB Created: 2021-05-11 11:23:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 9162bc9d5181070dbb63ae671b7e894b SHA-1: 7a5a030f75397a16676b7de5f6182169a29941c4 SHA-256: e01d5951c65c37db8eb4157e172ebe65b4fb0631f57a4e5ec46c7a81823003ef
134 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. The presence of an external URI pointing to a suspicious domain, combined with heuristics indicating a link farm and urgency lures, strongly suggests a phishing attempt. Although no scripts were explicitly extracted, the PDF structure and detection names imply potential for embedded malicious content or redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://botokaw.ru/strik?utm_term=navien+recirculation+pump+not+working PDF link annotation
    • https://cdn.sqhk.co/xanapaje/WTqNjjU/arthropod_phylogeny.pdfIn PDF document text
    • http://mitutepoka.medianewsonline.com/57592003948.pdfIn PDF document text
    • http://busenefodo.22web.org/who_is_the_creepy_guy_in_charlie_and_the_chocolate_factory.pdfIn PDF document text
    • http://microdigitalmeter.xyz/91910905535e7wo9.pdfIn PDF document text
    • http://msertis.xyz/wivifemiginuxifsr178.pdfIn PDF document text
    • http://idealica-italiauficiale.website/bachelor_thesis_thema_formulierenbh2ur.pdfIn PDF document text
    • https://cdn.sqhk.co/mamabukalom/gggeIgc/sirosesimo.pdfIn PDF document text
    • http://duribil.iblogger.org/mordedura_de_araa_viuda_negra.pdfIn PDF document text
    • https://cdn.sqhk.co/xamitarerivu/Jjjgijd/peludu.pdfIn PDF document text
    • http://wejuveziwep.mypressonline.com/5606631484.pdfIn PDF document text
    • https://cdn.sqhk.co/noviraxat/cjbdiaz/craigslist_nh_boat_slips.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
    • https://uploads.strikinglycdn.com/files/76f4f655-ba8a-405f-90d6-a8000af77a47/golesij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7504531e-ea41-4d73-9790-2e06d5543b06/lista_de_cationes_y_aniones_ms_comunes.pdfIn PDF document text
    • http://wororeba.epizy.com/ridutepinom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6324ace-9603-4f6e-a028-cf052fbb33cf/70836880711.pdfIn PDF document text
    • http://wiloradakuno.onlinewebshop.net/2002_ford_taurus_owners_manual.pdfIn PDF document text
    • http://mojozore.myartsonline.com/quadratic_transformations_quiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad8d506a-d2a0-4aba-945a-fbe60ca3de53/mufedipotaxumewofumen.pdfIn PDF document text
    • http://xiniwipilanaju.atwebpages.com/dapinapu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8a3ba40-c4f4-4084-b5d6-b612e127efbf/how_do_you_use_the_auto_clean_on_a_black_and_decker_coffee_maker.pdfIn PDF document text
    • http://rabelame.atwebpages.com/adding_and_subtracting_decimals_game.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_off0000f033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF033 5140 bytes
SHA-256: c2de73a48c568fe42d8cb0ebdc364be8a3274632d776a2bfcf2faa9d5353f571
font_01_sfnt_off000101b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101B2 10564 bytes
SHA-256: fe38d28c3eb432ac48c5977d8c82eb47a2237ebcd4cf39f0006d62953f6bdb27
font_02_sfnt_off000125a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125A8 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378