Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe4e767c7e191be3…

MALICIOUS

PDF

82.0 KB Created: 2021-03-30 03:20:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 1dfed7f6cd018bc9c9815a14800b818c SHA-1: c2dca7a9748d2b3abd612c3e826e3f5d52da43ae SHA-256: fe4e767c7e191be39634e217a96edf6370c927e13b4e854d67812ed280e1cd1a
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a heuristic firing indicating it's a phishing lure using an SEO redirector. The embedded URL, 'https://maypoin.ru/award?keyword=liberalism+find+a+cure+pdf', is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and the nature of the URL suggest it's designed to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://maypoin.ru/award?keyword=liberalism+find+a+cure+pdf PDF link annotation
    • https://cdn.sqhk.co/pavetikedur/Ljajfig/sunedilozafifutigogu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484355/normal_6056d77b033ef.pdfIn PDF document text
    • http://libopadu.scienceontheweb.net/ccsk_book.pdfIn PDF document text
    • http://ragofilud.medianewsonline.com/political_ontology_colin_hay.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450896/normal_601d6ff8cabb0.pdfIn PDF document text
    • http://japadalifu.22web.org/is_it_illegal_to_have_a_lock_pick_set_in_california.pdfIn PDF document text
    • https://cdn.sqhk.co/tivuzofep/iig9sw2/build_website_without_website_builder.pdfIn PDF document text
    • https://cdn.sqhk.co/wupetutigo/ckB8UBs/41049193544.pdfIn PDF document text
    • http://kovefubiwajulo.22web.org/troy_bilt_30_inch_riding_mower_deck_removal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450147/normal_604a9350739ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486061/normal_60597fac772c7.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/fajujiju/gallbladder_polyp_monitoring_guidelines.pdfIn PDF document text
    • http://muliwavanebebo.onlinewebshop.net/fenakekenixobunivawurevo.pdfIn PDF document text
    • https://s3.amazonaws.com/zulezov/56624880719.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/56142471431.pdfIn PDF document text
    • http://pejulok.epizy.com/worthy_elevation_worship_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/how_to_clean_fujitsu_scanner_ix500.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/v_b_d_full_form.pdfIn PDF document text
    • http://makuvekate.rf.gd/thematic_apperception_test_tat_part_1_ebook_100_stories.pdfIn PDF document text
    • http://wisakixatepifu.epizy.com/annuity_chart.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_off00010102.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10102 5384 bytes
SHA-256: d73870ed655d8887aaa232e60fba319ff6bd0d6e4f3574421b6a31745c17c6bc
font_01_sfnt_off00011336.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11336 11068 bytes
SHA-256: e1a6ab0ad6106e20fd875a7265338e6e3d62e07a0c461f7b7f13627d4e8f43b6

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