Malicious PDF — malware analysis report

Static analysis result for SHA-256 10491e13c7aff4ae…

MALICIOUS

PDF

46.3 KB Created: 2020-10-23 08:40:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 42e2124146dc43f7850284459b81f7cc SHA-1: 2337075c15975e9bdaecd26b68fdd2d042c5edf3 SHA-256: 10491e13c7aff4ae5e72499688e2880b9466f0564cb26adf0e2fa15d01f28248
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to trick the user into visiting a harmful site. The document body and metadata suggest it is disguised as a notification, aligning with spearphishing tactics. No scripts were extracted, but the presence of a malicious URL is a high-confidence indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://cctraff.ru/pify?keyword=sbi+po+2020-19+notification+pdf In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nigimul/tilar.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/hindi_typing_exercise_book.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/lapolabokitofagelixepeb.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/calendario_formula_1_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/bikagedomegov.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/event_planning_budget.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/arita_gate_valve_catalogue.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/45653025297.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/article_2_section_1-_28_philippine_constitution.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/vonezot.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/84000056795.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/pureregotusiwum.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/job_application_form_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/ditetofavixamakipajowoso.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/adobe_after_effects_cs4_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/egypt_concession_map.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/95957544531.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c731767-8587-4061-9eb9-ee6b2817b78a/yamaha_rx_v385_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c2a1a30-4ccf-42db-9d64-e927d48a6ecc/9443677669.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86ffc1a0-3ed3-446e-9a06-7c3d470788c4/insignia_usb_to_hdmi_driver_download.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_off000073b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73B0 5600 bytes
SHA-256: 5f5b6f2abf78a97a7d56cdc5ec4f382385fea4ba81ed2028dd8d6cf9a0fb4be1
font_01_sfnt_off000086ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86CA 10900 bytes
SHA-256: 9156cb5d3af31e047634346fb2fc7cc6f6391a6861cababbfcf15e710fac82ae

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