Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a063268157e87e2…

MALICIOUS

PDF

67.3 KB Created: 2021-03-12 07:59:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 01e8eb2fca58cc48f7cc0ac1f36b88d4 SHA-1: 2440524064103827bbc4864b3510c63112158797 SHA-256: 4a063268157e87e23c06d1e7599bd809dea6b1e55da2180064fa44ae819635d4
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, appears to be a lure related to 'Saeco intuita coffee machine instructions'. No scripts were extracted, but the presence of multiple external URIs and the overall heuristic profile strongly indicate a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://vilenefex.ru/wb?keyword=saeco%20intuita%20coffee%20machine%20instructions PDF link annotation
    • http://getporte.xyz/awdhesh_premi_song_bol_bamka555.pdfIn PDF document text
    • http://jexekiraj.sportsontheweb.net/taganoxejine.pdfIn PDF document text
    • http://sport-stavki.fun/democratic_party_voter_guide_los_angelesuf6zb.pdfIn PDF document text
    • http://feludekinopotas.scienceontheweb.net/energias_renovables_chile.pdfIn PDF document text
    • http://wurilozi.scienceontheweb.net/85362681238.pdfIn PDF document text
    • http://jafoxidulez.mypressonline.com/card_management_system_in_banking.pdfIn PDF document text
    • http://milanbeach.fun/post_office_day_after_thanksgiving40hxb.pdfIn PDF document text
    • http://bagidopivulo.mywebcommunity.org/64610085429.pdfIn PDF document text
    • http://help-feedback-amzn8.xyz/stickman_ninja_2_ultimate_ninja_warrior5nc47.pdfIn PDF document text
    • http://pawezujexas.mywebcommunity.org/how_to_play_life_online_with_friends.pdfIn PDF document text
    • http://reduslimitaly-official.site/37220031515nqm0s.pdfIn PDF document text
    • http://korecos.ru/allow_us_to_introduce_ourselves_meme_templatepfe70.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e229b84e-d8d9-4a76-b4ce-815a659c88bf/73465169473.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ffb6d27-3b17-4b65-bf78-38b54f988197/tujomeve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45decbf2-9e50-4fef-b1f9-f4ea861d870d/garmin_nuvi_2555lmt_specs.pdfIn PDF document text
    • https://77da94c0-0f0a-445b-87af-e489a0b5ef66.filesusr.com/ugd/db1da1_d1bd9e947318427398cab40f557063c5.pdf?index=trueIn PDF document text
    • http://soranodabiwegi.myartsonline.com/el_conde_lucanor_cuento_51_resumen.pdfIn PDF document text
    • https://3f9320ff-391d-49df-b192-c557e211a93c.filesusr.com/ugd/469aea_aab956e9c0d74735a68d85e1db0e032c.pdf?index=trueIn PDF document text
    • https://933afb0c-60ca-4ff4-ba38-e7c804ca925d.filesusr.com/ugd/941881_7a792a61adc448259a0e25c1b2889eee.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/49eb219b-027b-4628-8d4e-f6dd35bea4a0/how_do_you_test_a_black_and_decker_battery_charger.pdfIn PDF document text
    • https://237a2310-9536-43ad-add1-fe73b840a51a.filesusr.com/ugd/8b319d_c567731612ee41be95ab57a3d70a00fc.pdf?index=trueIn 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_off0000c950.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC950 5192 bytes
SHA-256: 19448583c29c87c8e41d67e245976332f6d953a6f2433a9d5ab91a607c8e7418
font_01_sfnt_off0000dad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD0 11264 bytes
SHA-256: a2aabc6b47d1b0fe8b5591ce510a47540aa3716276c2227cd8a104f816ef5120

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