Malicious PDF — malware analysis report

Static analysis result for SHA-256 abe714dd449fd509…

MALICIOUS

PDF

84.8 KB Created: 2021-03-14 06:05:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 8161211b2af7ae45d78d4b80cba01ebc SHA-1: 52db1a4fa61905b80307c7baca3254e513473a0e SHA-256: abe714dd449fd509c2193dc04e1190e7f2615858550a3cccf29d6e94d21876dc
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • 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 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.
  • 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://dugedepap.ru/wix?keyword=roblox+studio+wikia PDF link annotation
    • http://jotafitosixa.getenjoyment.net/50502388825.pdfIn PDF document text
    • http://lessonsonline.site/bafebaxefug8rv2g.pdfIn PDF document text
    • http://sijubuwejipamun.mywebcommunity.org/united_limo_south_bend_to_ohare_schedule.pdfIn PDF document text
    • http://seplafond.xyz/hp_laserjet_printer_p2035_tonertnmcu.pdfIn PDF document text
    • http://venira.su/apc_smart_ups_rt_1500_user_manualo28qs.pdfIn PDF document text
    • http://dontbeshy.xyz/migipevabojederutfv2t.pdfIn PDF document text
    • http://simultaneously.space/medical_anthropology_and_sociologygbsp9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://80cb706b-a9cc-40e6-9cd2-ad5688d6c4a8.filesusr.com/ugd/c84a73_78d9858877bf497c9e44276117488a8c.pdf?index=trueIn PDF document text
    • http://bajekixizosi.myartsonline.com/what_is_a_feature_story_in_agile.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/38519032366.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/anjou_aroma_diffuser_manual.pdfIn PDF document text
    • https://c84d532c-3b33-47d6-96aa-4134a1164eb1.filesusr.com/ugd/6d45f6_cb2fd6a04d8145fc8f812d9f21e61eb2.pdf?index=trueIn PDF document text
    • https://ef733714-782c-48ea-8991-1bc0bf0c95f2.filesusr.com/ugd/ad2ade_cc21f7d8012848029191393d1032f0d7.pdf?index=trueIn PDF document text
    • https://7e005a1c-fb68-43c1-af83-b854b6a2d282.filesusr.com/ugd/dcfb95_f872d18c20374980be25f4da7987e9cb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/digestive_system_free_worksheets_for_grade_4.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/bell_hooks_engaged_pedagogy_a_transgressive_education_for_critical_consciousness.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/acceleration_problems_with_answers_for_class_9.pdfIn PDF document text
    • https://50b44c92-959e-4a15-bf83-93d6b2b518d6.filesusr.com/ugd/3ed44c_b62ab5a89947402cb17d7e16f0b6f247.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nimuwet/ligovepimijem.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/bully_ps4_trophies_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/21328451245.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/kuzebavafon.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/guidestone_insurance_rates.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/el_yo_minimalista.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/private_practice_season_5_episode_11_cast.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_off00010c94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C94 5096 bytes
SHA-256: ae1922a7678a20fec6f51427d473e491d38f4b6c0e37ecf7825f6c6fe9993169
font_01_sfnt_off00011e16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E16 12096 bytes
SHA-256: 1c30101af41c305321ae58f81bf53108ab1f288311b109e752865bcbf1384a83

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