Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1959811576b226f…

MALICIOUS

PDF

69.9 KB Created: 2021-03-23 13:25:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 02ee1e06a8a670d10025fd5590022770 SHA-1: 1bcfcbb1cb3b7c7c7ba600209db688803fb1f5b1 SHA-256: e1959811576b226fceab19e7f037e39a236e6d1d0826c98540ad804000c743a4
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and an ML classifier, with ClamAV detecting it as Pdf.Phishing.Trojan. The file contains a large number of external links, many pointing to disposable domains, suggesting a link farm or phishing operation. The embedded URLs are likely used to redirect users to malicious sites.

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.
  • 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/wix?keyword=kunal+sharma+actor PDF link annotation
    • https://cdn.sqhk.co/fuzomorikat/ihB83gc/12886861770.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/8s5hdhh/92516002265.pdfIn PDF document text
    • http://topagut.iblogger.org/96093970774.pdfIn PDF document text
    • http://kofupum.mygamesonline.org/how_to_calculate_hang_time_physics.pdfIn PDF document text
    • http://sudedelanefozuk.66ghz.com/what_is_the_best_bug_zapper_to_buy.pdfIn PDF document text
    • https://cdn.sqhk.co/nokodexuxof/ZighjoU/26740141908.pdfIn PDF document text
    • https://cdn.sqhk.co/gegenosuzun/NoPhhCO/nuparixagisogok.pdfIn PDF document text
    • http://rejonanujezeke.22web.org/dd-_wrt_openvpn_configuration_guide.pdfIn PDF document text
    • http://zutumufedige.getenjoyment.net/a_narrative_of_the_captivity_and_restoration_of_mary_rowlandson_sparknotes.pdfIn PDF document text
    • http://lumufurisazela.mywebcommunity.org/bucket_elevator_design_calculations.pdfIn PDF document text
    • https://cdn.sqhk.co/pugirunosamo/swgjXij/start_em_sit_em_qb_week_2_2020.pdfIn PDF document text
    • http://jopimutedu.iblogger.org/20520625857.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ce099f17-eb12-430b-a452-8d789b3ee5a8.filesusr.com/ugd/aef5b7_69599e085d6241389821b8fe394ae41b.pdf?index=trueIn PDF document text
    • https://dae57379-2785-4108-a223-4562ecbfc22e.filesusr.com/ugd/87ad98_8a474f14782e4c6c8c3eb0ed12e57dac.pdf?index=trueIn PDF document text
    • https://ed21222e-fee3-4fab-8b52-e2ddb7bb35ab.filesusr.com/ugd/e73fea_a8c3dc3daea34e46a52e98c2528147d5.pdf?index=trueIn PDF document text
    • http://besenasoxa.epizy.com/badaxagizurud.pdfIn PDF document text
    • http://favigagiwu.epizy.com/cid_episode_free_hd.pdfIn PDF document text
    • https://18cceff7-6d50-42ec-9d85-67184b61345e.filesusr.com/ugd/8c2e83_b111343ae0584643a55c718320ae70ca.pdf?index=trueIn PDF document text
    • http://dozonox.epizy.com/mapamundi_fisico.pdfIn PDF document text
    • http://likijanima.epizy.com/25924579748.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d51d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD51D 5008 bytes
SHA-256: e0037f4ac7da541ffb6b6e6183c54ac1ab669e4800024f64b4e83137eaba33f1
font_01_sfnt_off0000e5fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5FD 10580 bytes
SHA-256: ca3d44488e7efec4efc40e982e19f0873ee74f599c0b0963b7d109cc778a8a6d

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