Malicious PDF — malware analysis report

Static analysis result for SHA-256 65ae3d8136c7c46b…

MALICIOUS

PDF

134.2 KB Created: 2021-03-29 03:48:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 0465e513f6244100061d33689113b041 SHA-1: 43f23c754b8d856a98cafd5add847c9a23863c6a SHA-256: 65ae3d8136c7c46be93bf5f825f1e8dc18bf42b0b8043e65d21ff653771da6e3
126 Risk Score

Malware Insights

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

The PDF contains embedded URLs and is flagged by heuristics as a link farm and a malicious PDF by ML classifiers and ClamAV. The document body, though heavily obfuscated, suggests a lure related to 'Ideology of Pakistan' to direct users to external sites. The presence of multiple unknown URLs indicates a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://pelibifir.ru/award?keyword=ideology+of+pakistan+pdf+notes PDF link annotation
    • http://lodomujimujug.mywebcommunity.org/bible_lds.pdfIn PDF document text
    • http://yandex-dostav.ru/kikedezijenubizalagavaponglx0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401525/normal_60256e2f4e32b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503524/normal_5ff62e8ea0df4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471690/normal_602ff3428424b.pdfIn PDF document text
    • http://xijipeva.mypressonline.com/biology_encyclopedia_free_download.pdfIn PDF document text
    • http://moresukko.ru/what_to_know_about_buying_a_new_buildx0ng7.pdfIn PDF document text
    • http://fisitupogavi.mypressonline.com/engineering_drawing_book_free.pdfIn PDF document text
    • http://fibiver.mygamesonline.org/glossary_of_cost_accounting_terms.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418968/normal_600c06ff29ca8.pdfIn PDF document text
    • http://gebikomuxe.getenjoyment.net/zitewikagasuguju.pdfIn PDF document text
    • http://amst-watch-v2.club/77708306769n5gxd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6f2fb29c-15f2-4b08-b525-3eb91a7f0a41.filesusr.com/ugd/c3548c_ecb6eb3f2281458e8022ea0a516ac661.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/33892432095.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0ef4021-6818-4d2e-835e-624445175232/manual_baofeng_uv-5r_plus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a24c3192-5e28-4146-838e-ee28b01574fb/74272770825.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d58e908-88eb-4aa3-975d-49aa2deb6a64/jump_force_ps4_gameplay_espaol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89be20a6-ccdb-4b26-95e0-d2eb717e6bd4/developmental_psychology_subtopics.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/passing_data_through_bundle_in_android.pdfIn PDF document text
    • https://3ff4c494-4984-418a-b709-7a5c611cca0a.filesusr.com/ugd/adbee0_31557e1a4d5249cf9df0a7f54806f17c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/wiruridisame.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/adobe_illustrator_cs2_trial_version_free.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_off0001d11d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D11D 5216 bytes
SHA-256: 161e066943d90ab0d06be5f38d39409d0cd09fd7e492fe832212015c19935eee
font_01_sfnt_off0001e305.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E305 11432 bytes
SHA-256: 62b6920726a27b5d8cac661d6fa0cf12df1e50cae0e9eddfc00246769a0b1d73

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