Malicious PDF — malware analysis report

Static analysis result for SHA-256 0624010ce344b085…

MALICIOUS

PDF

84.7 KB Created: 2021-05-17 11:11:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 0371a6cc455f782bf2b077ff7682d348 SHA-1: 1aaf552427eb96939257ca30d2fb56b0364651e2 SHA-256: 0624010ce344b085bb926599a589ebb584b3f92d5d5a6969680e93337236a0ee
96 Risk Score

Malware Insights

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

The file is a PDF document that contains embedded URLs, one of which is flagged as suspicious and likely leads to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with phishing or malware distribution. The document body, though heavily corrupted, appears to be a lure related to a product manual.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://resalured.ru/strik?utm_term=panasonic+viera+plasma+tv+th-42pa60a+manual PDF link annotation
    • http://003-center.ru/casio_hr-8tm_plus_printing_calculatornj0i9.pdfIn PDF document text
    • http://unlockdeals.shop/anti-_aircraft_flak_battle_badgebrp27.pdfIn PDF document text
    • http://macsk.space/zagexodusutamabajasiwuvqtrz.pdfIn PDF document text
    • http://datinge.site/codycross_answers_group_114_puzzle_4b9g3f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379611/normal_5feef6f83e193.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408864/normal_5fd153bd4007b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421224/normal_606dc673b9576.pdfIn PDF document text
    • http://riwalimuj.scienceontheweb.net/62316218745.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369930/normal_6035d69a60c45.pdfIn PDF document text
    • http://povisowalikim.scienceontheweb.net/female_bodybuilding_workout_plan.pdfIn PDF document text
    • http://idealicaitalia-oficial.site/earth_and_environmental_science_study_guidey35fq.pdfIn PDF document text
    • http://xomunuxeju.sportsontheweb.net/dusubukonezurusupavumi.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/jewizopukuni/how_to_set_my_wr_100ft_watch.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/74634923083.pdfIn PDF document text
    • http://guseboses.atwebpages.com/ajahn_brahm_ksiki.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/91869826532.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d510ba6-6395-4c38-a747-0fddbcc1f7cc/88483808462.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/949336a1-111c-4086-9305-9292c2779803/87430043309.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/48975092509.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77798900-2532-42c4-8bbf-e5a0eb7f70cc/john_deere_z425_mower_deck_belt.pdfIn PDF document text
    • https://s3.amazonaws.com/rizoli/maven_3_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/architektura_informacji_praca.pdfIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/avast_software_free_for_pc.pdfIn PDF document text
    • http://xemigososefof.atwebpages.com/cch_chuyn_file_nh_sang_jpg.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_off000105f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F2 5784 bytes
SHA-256: 5bbf3cd4701be89eee0345966d04558e81b763762bc11d4888c293af7346aaa8
font_01_sfnt_off00011988.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11988 14332 bytes
SHA-256: 64d31fa20d1e9004e89bcdfd572066b997ce684266e426db3e164f3ff58f4f80

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