Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffeb0a2ea9541df5…

MALICIOUS

PDF

67.2 KB Created: 2021-03-28 21:42:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 0ed9d90031469760a9f997fe9b00d31e SHA-1: 550baefbbd2067285051f981e92c2f817473fbf7 SHA-256: ffeb0a2ea9541df5c2c913b0c9ed3648c146df362b3474c43c3255d81292d7e4
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. 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 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crophysi.ru/wix?keyword=french+bistro+console+table+with+cast+iron+base+and+marble+top PDF link annotation
    • https://cdn.sqhk.co/jegetito/mgjGpml/chamberlain_liftmaster_professional_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/sezunofubuzi/1hcZwkH/35592917706.pdfIn PDF document text
    • https://jexumaravoza.weebly.com/uploads/1/3/4/2/134265375/kejobevejaxero.pdfIn PDF document text
    • http://baffer-shop.space/first_aid_merit_badge_requirements_boy_scoutsm9afh.pdfIn PDF document text
    • https://cdn.sqhk.co/kagalitisup/ko7Enhf/solid_color_wallpaper_peel_and_stick.pdfIn PDF document text
    • https://pesopipuni.weebly.com/uploads/1/3/2/3/132303043/roroboberuburu_senawizokabu.pdfIn PDF document text
    • http://creamwalls.online/dipafumolazifosafsdyo4.pdfIn PDF document text
    • http://puruzil.iblogger.org/59254370801.pdfIn PDF document text
    • http://rameautbxy.space/how_to_calibrate_magic_chef_gas_ovenjgu6k.pdfIn PDF document text
    • http://petrol-v-pol-price.site/rules_of_attraction_movie_ending_explained52tzb.pdfIn PDF document text
    • https://cdn.sqhk.co/tirinakiweda/p3gj2gi/rotamewewul.pdfIn PDF document text
    • https://tidijesugeji.weebly.com/uploads/1/3/4/7/134764535/zaxofebexap.pdfIn PDF document text
    • http://helplnstagramcontact6088757.com/bopuligapavamulozzhqj8.pdfIn PDF document text
    • https://benedelewerovil.weebly.com/uploads/1/3/1/3/131384674/f2d2c9cd.pdfIn PDF document text
    • http://1-bog.ru/descargar_juegos_gratis_del_hombre_araa_para_pcg63jz.pdfIn PDF document text
    • https://cdn.sqhk.co/zafilivopupu/lmiarhd/template_letter_for_job_offer_uk.pdfIn PDF document text
    • https://betirowi.weebly.com/uploads/1/3/4/6/134661799/kasobitefe.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/bamepofewalada/sargodha_university_admission_form.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/40k_tyranids_codex.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/digraphs_and_blends_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/nassau_county_family_court_information_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/piruvirosag.pdfIn PDF document text
    • http://wijopimitiraze.epizy.com/juniper_bgp_configuration_guide.pdfIn PDF document text
    • http://vufagozujidivu.epizy.com/17357006443.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_off0000c994.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC994 5500 bytes
SHA-256: f243f12d9d47aef1966c044e49df055abd15818570f25571b6d089d965682629
font_01_sfnt_off0000dc2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC2C 10232 bytes
SHA-256: 7cb608b7ec3143b44ca0e4f05ab29131c08efb65acd5c9224ff2e8a7de6529a2

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