Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9eba2af284abdee…

MALICIOUS

PDF

78.1 KB Created: 2021-03-10 09:14:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b0b6022a204ae24c5ca7aaa281b50410 SHA-1: 9c19c2254bb512c0d4b79aa26beed1a062e8bd35 SHA-256: d9eba2af284abdeeabb8b091fc4d190433e1a41ed66d972f2e5b33502e7c73ec
146 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a QR-code lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://soxebez.ru/123?utm_term=beamforming+orbi+aktivieren PDF link annotation
    • http://handler-autoscout24.com/toshiba_satellite_l775d-s7222_batterya8gwp.pdfIn PDF document text
    • https://cdn.sqhk.co/fexiseme/NMihhfg/2020_election_prediction_map_update.pdfIn PDF document text
    • https://cdn.sqhk.co/vizinifum/hiiidqq/ice_hockey_skates_youth.pdfIn PDF document text
    • http://health-top.ru/clapper_board_template_printablex3gqm.pdfIn PDF document text
    • https://cdn.sqhk.co/bedogipaxog/jiR3Mij/animated_sticker_emoji_for_whatsapp_wastickerapps.pdfIn PDF document text
    • https://cdn.sqhk.co/zatovafer/ibsLhjj/tawagonarud.pdfIn PDF document text
    • http://frontglass.xyz/28146550913tpzt.pdfIn PDF document text
    • http://natural-shop.info/70445197612yiv0k.pdfIn PDF document text
    • http://texulateniz.iblogger.org/human_priest_leveling_guide_classic.pdfIn PDF document text
    • https://cdn.sqhk.co/femokuxajuz/dnonehh/come_avere_skin_gratis_su_among_us_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/negolura/gcgdy8p/86227874441.pdfIn PDF document text
    • http://mopomelodow.iblogger.org/zetodoviwutukinanukude.pdfIn PDF document text
    • https://cdn.sqhk.co/fojilude/dYicQHa/gacha_life_2_gameplay_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ca8dcc6-c646-47a4-8fe7-9c86c311a29c/12481960081.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2059d5b-ba91-4acb-8d83-270db02159e4/what_is_literature_review_outline.pdfIn PDF document text
    • http://famifel.rf.gd/bebupifagajodegeru.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/south_carolina_drivers_manual_read_aloud.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/10511941782.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/12903564048.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/frp_bypass_7._0_apk_asus.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_off0000f3f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F4 5192 bytes
SHA-256: 5f069adf345f614009586c2e820df2ab69efab350e1b0c10de73482a61ecea17
font_01_sfnt_off0001059f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1059F 10992 bytes
SHA-256: 4e8889ca0379c18236eba10f8109216250138c8a1f31f5782986de4b01e34d18

Open this report in the interactive analyzer, or submit your own file for analysis.