Malicious PDF — malware analysis report

Static analysis result for SHA-256 cab1a5676c3440fc…

MALICIOUS

PDF

74.3 KB Created: 2021-03-20 16:04:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 26b52a3753513d019bc655bab2447691 SHA-1: b0075ca12b3f4d0f584ed68ff4a41d5fc9100c54 SHA-256: cab1a5676c3440fcb1ffce8499b03c577f159ca1e48124ba1dfa28111cc38631
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to phish or deliver malware. The ML classifier and ClamAV detection strongly support its malicious nature. The embedded URL is likely intended to lead the user to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/wix?keyword=infinity+gauntlet+aftermath+pdf In PDF document text
    • https://favipipuwebex.weebly.com/uploads/1/3/5/3/135397367/rajijemutafud_sipune.pdfIn PDF document text
    • http://ratedewu.scienceontheweb.net/kufize.pdfIn PDF document text
    • https://bimuxafidiw.weebly.com/uploads/1/3/4/7/134701061/8593553.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386073/normal_600cca33556cc.pdfIn PDF document text
    • https://cdn.sqhk.co/kakolutezegu/fy3OgfG/59315970153.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.site/how_can_i_understand_science_betterj3rsm.pdfIn PDF document text
    • https://zadoloxo.weebly.com/uploads/1/3/4/6/134602956/papakulatobinaxa.pdfIn PDF document text
    • http://linavaluviriv.getenjoyment.net/how_to_calculate_concrete_material_as_per_mix_design.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377128/normal_603c479e0e455.pdfIn PDF document text
    • https://cdn.sqhk.co/xexanodu/glV4igd/pabunoloduvijepuvaxukesim.pdfIn PDF document text
    • https://cdn.sqhk.co/fafaviwi/hgjhieE/amway_network_marketing_pros_and_cons.pdfIn PDF document text
    • https://cdn.sqhk.co/sunidoxil/FgjgciT/archery_targets_3d_sale.pdfIn PDF document text
    • http://fosavaxenu.mypressonline.com/there_is_there_are_worksheet_islcollective.pdfIn PDF document text
    • http://tepifugamokeg.medianewsonline.com/27395860567.pdfIn PDF document text
    • http://sallely.xyz/motorola_astro_25_portable_cps_softwarew4jo1.pdfIn PDF document text
    • http://rollernefrit.xyz/pinuzot6yj3n.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/dikobepibelun/warrior_crafting_guide_hearthstone.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/56159391228.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/fixed_term_contract_employment_template.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/bhojpuri_movie_karne_ke_liye_website.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/14249660521.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_off0000e573.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE573 5316 bytes
SHA-256: 1cf1e848c0ea9bc19f6ec69e8f849dfe70e558df909583292798bfda57cf41b3
font_01_sfnt_off0000f76f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF76F 10708 bytes
SHA-256: 0b22dba972ea48e805a69cdf99d2e8159f3f616237fc39e14501afcde4f9d2e7

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