Malicious PDF — malware analysis report

Static analysis result for SHA-256 cce981fcaf071e68…

MALICIOUS

PDF

80.8 KB Created: 2021-04-07 21:23:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d86326c0c317361903e62a6c49b0522c SHA-1: b384685007d16e16465cbd7dd9ef812cd743746d SHA-256: cce981fcaf071e68dba0432a496627ca499688eb286c270e5dc37e2bee89a896
156 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. 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 0.9993

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://bologen.ru/aws?utm_term=que+es+el+liderazgo+en+las+organizaciones PDF link annotation
    • http://com-signto6.xyz/selective_digestive_decontamination_guidelineseqjgm.pdfIn PDF document text
    • http://galoomer.online/motion_graph_analysis_worksheet_answersovqng.pdfIn PDF document text
    • http://my-credit.info/706283202597hzlp.pdfIn PDF document text
    • http://tiktoktop.design/xigefegewekekonos6dl.pdfIn PDF document text
    • http://lifeit.pro/mebaludubofogonigufotcvxm.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/tafogusegabomu/65409586072.pdfIn PDF document text
    • https://011f98f8-b45f-4578-a2fd-466b530f7845.filesusr.com/ugd/74e905_281fec173fbe461dbf28cdc6200f1b87.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c72ab7c-66e4-4d4d-add2-e7479d0a89ea/muvadaluxosijuw.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/ugly_duckling_story_book_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/34832158175.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7551778-dc11-4b8f-8a35-b60589deac27/72452683805.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/side_by_side_1000_shootout.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/034b168f-a0c2-44ce-ac14-1d8fefdcc625/how_much_is_adobe_student.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e629e4ea-2681-482e-844e-3fdd32466a27/55329822867.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0568cded-4c64-4a03-8fb3-6f47a591da6c/rheem_criterion_gas_furnace_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a38c7495-4027-4285-b5cf-3684bfc35c39/toliboxef.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/alight_motion_pro_apk_mediafre.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/minions_movie_720p_in_tamil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbad535b-45a4-41f3-95c0-02e296490246/canciones_con_letra_y_acordes_para_piano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4945600a-1010-4103-a7bc-902a899bc748/53062356516.pdfIn PDF document text
    • https://s3.amazonaws.com/jevelel/tidibutajusugusivof.pdfIn PDF document text
    • https://4a39c6c9-989b-4d11-b2d8-cc0becc7f193.filesusr.com/ugd/ef0078_d9f14e3f6c0340a094d6dc3adb91bf07.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/widofafane/lewmar_mainsheet_traveler_kit_review.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/sun_joe_pressure_washer_2030_detergent_not_working.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_off0000fd2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD2C 5220 bytes
SHA-256: b7111312399dabd47b7307c10aa96b698da0479cd658a64b14062abce4831b7c
font_01_sfnt_off00010f02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F02 11408 bytes
SHA-256: fb358e83b6defd3243c4a46b0762de7516d490a83e18d239b951f914f0c16661

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