Malicious PDF — malware analysis report

Static analysis result for SHA-256 adbe82e2be3f1ee2…

MALICIOUS

PDF

78.0 KB Created: 2021-03-06 22:10:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: e78c43faaf3a053b425e0989058901f4 SHA-1: ef179702667b9c55d90884824a74be45a36ad619 SHA-256: adbe82e2be3f1ee2bc35a3624cc3011216564fac3a574c378368be175466eba4
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting, suggesting it's part of a link farm or SEO spam operation. The primary external URL, https://fokemale.ru/wix?keyword=toram+online+katana+class+guide, is likely used to direct users to malicious content or phishing pages.

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://fokemale.ru/wix?keyword=toram+online+katana+class+guide PDF link annotation
    • https://cdn.sqhk.co/vozeseseber/jcLtifX/moto_racing_3d_game_video.pdfIn PDF document text
    • https://cdn.sqhk.co/bafebolabefo/QEgjok4/huawei_color_band_a1_specs.pdfIn PDF document text
    • https://cdn.sqhk.co/gaxudofexal/gjjhUge/wikipedia_dictionary_english_to_urdu.pdfIn PDF document text
    • https://xinusikavafomi.weebly.com/uploads/1/3/4/3/134353784/xibir.pdfIn PDF document text
    • https://nokavapeselodes.weebly.com/uploads/1/3/4/6/134638024/zowukapofaro-jutitunedas.pdfIn PDF document text
    • https://koworuvixoduto.weebly.com/uploads/1/3/4/3/134352933/guvudexodogugoz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tevomenil/nekatovuzobifepominopev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cac7f2ca-d662-4a51-82f3-6926ab6caa91/32712865250.pdfIn PDF document text
    • https://911f1565-2faa-4874-b261-330d521e7362.filesusr.com/ugd/f46427_61a4a22026ff46528d10dbb44041fad3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/kerboodle_summary_questions_answers_biology_ocr.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2aed0ad-9017-45ab-93e6-95f2e344b6fc/how_to_strength_training_for_weight_loss.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39ccbd25-1f52-43e0-96cd-7e84946cb9b8/42615318360.pdfIn PDF document text
    • https://cb6d8354-940b-4e05-9f1d-0150973ab277.filesusr.com/ugd/882da0_9e720136afe04112bd7e49b773e8970f.pdf?index=trueIn PDF document text
    • https://0e8f88b9-656e-4b05-9cd8-8bd477f85547.filesusr.com/ugd/95b9ea_f0236b1bd9c94302b1e3f419450e71a5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/libosokune/75717314419.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/mla_format_annotated_bibliography_sample.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9444b5d9-b815-4190-89c9-f57cc3bf2a7f/xadekaxarexe.pdfIn PDF document text
    • https://80f75f89-a1e3-4611-a0ef-7a704eb82da9.filesusr.com/ugd/0286dd_82b93f5f27ce4bf796517b96cbdfd4e3.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_off0000f4de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4DE 5272 bytes
SHA-256: 281d641c81fd5f67cb630e9814ea36291f63acdac2ab8c34087bcdc1d5eceb99
font_01_sfnt_off000106b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106B2 10648 bytes
SHA-256: 7ddd7cd217120b3823afbee11bd0c165ac8e830e837e2804219b313d2dd12bc1

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