Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cb78054ee0526e8…

MALICIOUS

PDF

81.3 KB Created: 2021-05-25 07:14:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e565b31a230b09550a4985f300047f43 SHA-1: 1786fedc2d5dfd1da7d2e758239898bdae1ee61c SHA-256: 6cb78054ee0526e89ca0ac2e0d18d1125363449287c8a9cec8087f46d809eb65
96 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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://maypoin.ru/strik?utm_term=how+to+use+nib+pen+and+ink PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420930/normal_605c42a8015a5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408174/normal_6001f29484ae8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379362/normal_5fee31c732eb5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457838/normal_6010366127aee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366000/normal_6040ae8a47237.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382407/normal_604055458abe2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404121/normal_5fcef84734e88.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/xamibudasagas/access_hollywood_reporters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a136efda-a646-4599-be9f-82295f7c38f1/life_fitness_elliptical_turn_on.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d080b62a-59e3-49d4-8718-b72f6fc43797/38108911275.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8545d43e-1c95-493f-9dda-54c0cee763b2/lowuviburejejejopilasa.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/72468110741.pdfIn PDF document text
    • https://s3.amazonaws.com/rurosaveruk/1980_john_deere_410_backhoe_weight.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca658fa9-2e72-47d5-a91e-5f449216d487/texas_instruments_ba_ii_plus_how_to_use.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cebb78b-ab87-4d36-8bff-0d1798502337/hp_laserjet_3055.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/angular_formgroup_disable_submit_button.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/nordictrack_fusion_cst_customer_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91a3c5c9-a3eb-43e7-b5ea-09c87d7e5460/pimibonibuwuj.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/fanamojijuwenasebasatitip.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxegu/coliform_e._coli_test_kit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1aac02c4-f36c-4fef-938d-717c79b6a3b4/degukuniburorekalisusu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca30cdd5-4ae4-4098-bd86-08fa35f18152/screaming_into_the_abyss_meaning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/045d2d8b-f7d4-425d-95ae-d556c24ce16a/how_to_start_business_plan_essay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/330f2898-8a8c-457f-9687-3db7570cd273/pigefolinodabifukepete.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_off00010020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10020 5080 bytes
SHA-256: 1cf47bcea5452c1cf9b0d0dac667ed787b4862135bd06d7139db70214fec2984
font_01_sfnt_off00011184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11184 11444 bytes
SHA-256: ba356188aa2375c90ef5249e349a369c6f99c48f3e20cb27038b74a28d1a7039

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