Malicious PDF — malware analysis report

Static analysis result for SHA-256 61ce60a8884e525f…

MALICIOUS

PDF

75.6 KB Created: 2021-02-22 17:27:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 7813fbdd9826509a9b9b0e1dd2fd9c99 SHA-1: b303c79aa5d0a429eae5a9b62fe5785a162e35c9 SHA-256: 61ce60a8884e525f34e8c43ade0891fbc9c3ad842ea6feed59aa7fe042149392
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious URL, likely intended to trick the user into visiting a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/wix?keyword=ap+human+geography+chapter+6+study+guide PDF link annotation
    • https://cdn.sqhk.co/lenufetimop/iimjbjj/football_live_score_application_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/nokotadi/ii7xvhi/best_coin_collection_holders.pdfIn PDF document text
    • https://cdn.sqhk.co/lepapina/dxEAdic/european_exploration_the_age_of_discovery_game.pdfIn PDF document text
    • https://cdn.sqhk.co/rowazazapa/ugcyt5O/cross_wallpaper_iphone_8_4k.pdfIn PDF document text
    • https://cdn.sqhk.co/mawejoxejobe/Biajehf/carrom_board_32_inch_amazon.pdfIn PDF document text
    • https://cdn.sqhk.co/kezinujus/ifjchdh/soxugagufiperilogebi.pdfIn PDF document text
    • https://cdn.sqhk.co/goduwonon/7jbz59V/37761533366.pdfIn PDF document text
    • https://cdn.sqhk.co/nowovadizeb/jcjiiek/coda_music_stomp.pdfIn PDF document text
    • https://cdn.sqhk.co/jomonufo/exWgcpX/ted_danson_age_height.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/gekixadonuru/nitefamimuvodujuw.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/all_purpose_sheetrock_joint_compound.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/small_bow_tie_template_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/cladwell_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/feedback_form_template_google_forms.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/aa_attendance_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/64452966343.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/miwidizunetus.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/credibility_synonym_formal.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/kaplan_qbank_step_1_correlation.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/zuvixivenigedufin.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/organisation_structure_template_ppt.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_off0000ea48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA48 5700 bytes
SHA-256: bdfdcec729ff535b0471e3298452fdae62914965b992fc8ffe3ea4686cb64110
font_01_sfnt_off0000fd86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD86 10412 bytes
SHA-256: c460f7d3eea782b0e030aab7685944bd92e3eb9961963861c0f344a45a42dfcf

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