Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc03d5f917a3e9c9…

MALICIOUS

PDF

83.6 KB Created: 2021-05-14 21:49:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: dc9b07d82310a3eff53acd1fd55ea4cf SHA-1: 604cbf7d767ba305dc30e62d468fb495e9a06b5b SHA-256: cc03d5f917a3e9c95df9036599e4b6a7b127ef635f9323496b9fe48263cf9a62
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, appears to be a lure related to technical documentation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://mezovuduw.ru/strik?utm_term=how+to+design+data+warehouse+and+give+an+example PDF link annotation
    • http://siwosupegejolop.medianewsonline.com/tivizij.pdfIn PDF document text
    • http://heleogose.online/pepikoborizefodqvio8.pdfIn PDF document text
    • http://ribavid.medianewsonline.com/91195357790.pdfIn PDF document text
    • http://titanovyi-filtr.ru/red_cross_lifeguard_recertificationbujs7.pdfIn PDF document text
    • http://nowefewafugaki.iblogger.org/office_management_and_effective_administration_skills.pdfIn PDF document text
    • http://bcpzonasegura10beta-viabcp.com/78479611195lidc8.pdfIn PDF document text
    • http://nifavogoso.22web.org/associationism_in_psychology.pdfIn PDF document text
    • http://sefegusekepuxa.mypressonline.com/5_string_banjo_chords.pdfIn PDF document text
    • http://afracheat8.xyz/76416159820g49ms.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fapugiv.rf.gd/62381029427.pdfIn PDF document text
    • https://s3.amazonaws.com/dobikasukavu/rasikufuvitelirutedofo.pdfIn PDF document text
    • http://vuxebezedigelun.onlinewebshop.net/pekufenedufariliza.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/anushka_sharma_video_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/avery_bookmark_template_number.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/1828743959.pdfIn PDF document text
    • http://wirirarosutuki.epizy.com/lifetime_network_tv_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/god_is_red_review.pdfIn PDF document text
    • http://tikisomoxo.epizy.com/38505133100.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/what_are_the_10_irregular_verbs.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/swingline_heavy_duty_stapler_800_staples.pdfIn PDF document text
    • http://wufajin.rf.gd/att_uverse_guide_online.pdfIn PDF document text
    • http://vasozebuxez.rf.gd/current_list_of_nicholas_sparks_books.pdfIn PDF document text
    • http://tafupudininidag.rf.gd/20_minute_strength_training_workout_no_equipment.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_off000108bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108BC 5556 bytes
SHA-256: 26d216bd4babf1d7ab9e65e20b6a9e7d87882f593824c93fe7f9a8f6079f4566
font_01_sfnt_off00011b8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B8A 10872 bytes
SHA-256: 4800842a163ebabdd6baba144610e46638d4bfd227a7e5e7dfcd43e9387f24fa

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