Malicious PDF — malware analysis report

Static analysis result for SHA-256 7327b550763053c7…

MALICIOUS

PDF

70.2 KB Created: 2021-03-15 08:05:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 34a23db298102f55308aa68001f5bab3 SHA-1: beef6d2b8478fe8608f80e63647acb06a42dd013 SHA-256: 7327b550763053c76dcda7b7fd46eb8342d16c16376e972015317d94d6769ba1
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be related to a search result for a technical manual, serving as a pretext to disguise the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://nipisod.ru/wix?keyword=honeywell+thermostat+rth2310b+installation+manual PDF link annotation
    • https://cdn.sqhk.co/nuvexajamu/ijAjeLj/movomafa.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvupalib/U3XU2cv/dopipa.pdfIn PDF document text
    • https://cdn.sqhk.co/xibetevoxaj/kBcjgib/pokoravajaxowo.pdfIn PDF document text
    • https://cdn.sqhk.co/goduwonon/jdr1gdf/xixipitafi.pdfIn PDF document text
    • https://cdn.sqhk.co/dasofuduveje/jh52tgh/likumemebidewevoz.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvopone/XJPiaid/75439126380.pdfIn PDF document text
    • https://cdn.sqhk.co/jasolizilaf/dagiijP/printable_divider_tabs_template_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc515cc9-4916-41ad-91a6-5e3a2bf4e484/how_do_you_write_a_5th_grade_informative_essay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75592cdb-f7ec-4c5f-8687-87246057efc4/les_mis_hit_songs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ada233b-393a-440d-b6fa-f489d5b1fefb/power_pressure_cooker_xl_used_as_slow_cooker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d15a9b7a-ee6e-4b81-99a5-a0ffb5a22414/masimo_rad_8_pulse_oximeter_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfa042ec-9788-437b-88c3-805742448618/pazaw.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/19715052120.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f4f707d-9367-42b3-be38-b3b2f28d321b/86923839730.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/26912015196.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7978ace-19bc-4972-b6b6-f0fd03a6b1db/nelusanopewabejale.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/kozopekoxoga.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/wupejalinogusixirut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ad2ad8b-919b-4057-a469-a651969dc457/shrek_closing_book_meme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/321b4e03-b0a3-4de2-8cb5-85c9bc365660/tebebilob.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/22938979813.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/005c1cdb-0ed4-46a9-848b-cc0236c46796/54825461643.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/252299a1-f2da-4615-a895-50cecacddcbc/if_this_is_a_man_online_book.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_off0000d4f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4F7 5708 bytes
SHA-256: a7f87369c1b63e1dbee2df6431cb0439c8bd509d56f5be90f371af0aa57da11a
font_01_sfnt_off0000e842.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE842 10176 bytes
SHA-256: 939f49933994df4d8a7637704370b9786f02fa32fc26ec5ba26c0eb6aa12adae

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