Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e0e98494cab3007…

MALICIOUS

PDF

77.7 KB Created: 2021-03-15 02:20:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: bce293ba66d02c49deda97297f347f7d SHA-1: 9db75c40676b19938c03140d4833ab8ef18610a0 SHA-256: 5e0e98494cab3007846528f4334c37dd361603f9c383fa70e3facf7a0beb2608
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The ClamAV detection and ML classifier also indicate maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards an attempt to redirect users to malicious sites, potentially for malware distribution or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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://baarspo.ru/strik?utm_term=twilight+breaking+dawn+part+1+soundtrack+tunefind PDF link annotation
    • https://piwirajaluz.weebly.com/uploads/1/3/5/3/135312697/tutevipa_tikus_timibajofu_jaxepozeb.pdfIn PDF document text
    • https://cdn.sqhk.co/devuzemalut/hggdujg/hotlinking_image_html.pdfIn PDF document text
    • https://vizufawamowimo.weebly.com/uploads/1/3/4/7/134700475/dujakeme_xegufeped_fisesov.pdfIn PDF document text
    • https://cdn.sqhk.co/rixakowu/jkSibia/red_ball_1_game_king_com.pdfIn PDF document text
    • https://cdn.sqhk.co/savageven/g1idaje/77014083467.pdfIn PDF document text
    • https://cdn.sqhk.co/mubogasaven/jgq2JnI/loturifaluk.pdfIn PDF document text
    • https://vezaruve.weebly.com/uploads/1/3/1/3/131378950/5481732.pdfIn PDF document text
    • https://cdn.sqhk.co/seponidozit/oihzIjg/deemo_vr_steam.pdfIn PDF document text
    • https://vunidiripoga.weebly.com/uploads/1/3/1/4/131453449/zexunurer_nonufomanepig.pdfIn PDF document text
    • https://cdn.sqhk.co/mukujoripu/iqNTbgu/95255309500.pdfIn PDF document text
    • https://cdn.sqhk.co/segenapiza/dicyjec/basketball_shooting_game_21.pdfIn PDF document text
    • https://cdn.sqhk.co/gorokipo/n7Hjigj/maxpreps_football_rankings_2020_texas.pdfIn PDF document text
    • https://cdn.sqhk.co/gumojitoxowu/O0jaibA/app_installed_but_not_showing_android_phone.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/jevedijadiki/what_not_to_eat_if_i_want_abs.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/15734965703.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/wumexutawebefuroxopopo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3daea9b5-d230-4a49-90da-f14a66477345/lenolulepuni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6f168fd-20b6-45a1-8d65-275d4dbb7d69/19860152647.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9035fff7-528d-44e0-9f19-5fdf7d513582/how_to_get_a_personal_trainer_certification_for_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2493f64a-2c0d-49b4-b02d-fab00b64b51b/riwabeniroba.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/limaguforirezufogipuzujir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77c92ef7-1779-43af-b676-1d3f459c0215/purafanexad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66af7b2b-4a3c-4c0a-b6c1-aa67549e6315/surawuxukuwovito.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_off0000edb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB7 5716 bytes
SHA-256: a6dd443563a06a5a03e23b4c52b9651bf2346cb304943deccfd99d99988a2891
font_01_sfnt_off00010134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10134 11476 bytes
SHA-256: 6b694430da25931c99fee5c68a6b7cc592fd6d683d928259e1b0aa2ef31b8ea7

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