Malicious PDF — malware analysis report

Static analysis result for SHA-256 2acda959321aa2f3…

MALICIOUS

PDF

84.5 KB Created: 2021-03-08 23:15:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: e13a1662d8e46dd06c209a4bb1cbb5db SHA-1: 82b1556f34768b55927afa272d4aca32208454fb SHA-256: 2acda959321aa2f392707a50fcedf305f5106ac29140f01345bdcc2efbe0c06b
126 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier. It contains multiple embedded URLs, with one prominent URL (`https://soxebez.ru/award?keyword=weight+training+for+basketball+pdf`) suggesting a lure related to 'weight training for basketball pdf'. The PDF structure and embedded links indicate an attempt to redirect users to potentially malicious sites for phishing or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://soxebez.ru/award?keyword=weight+training+for+basketball+pdf PDF link annotation
    • http://glossywp.online/lexijuvx1m.pdfIn PDF document text
    • http://probkin34.xyz/goravoxebogufijizozepite2kq3u.pdfIn PDF document text
    • http://zugugalepew.mypressonline.com/sword_art_online_games_worth_playing.pdfIn PDF document text
    • http://excschool.ru/27665881573mp7h0.pdfIn PDF document text
    • http://soul-felt.com/32368181692lp4h.pdfIn PDF document text
    • http://dodemawaj.iblogger.org/suwov.pdfIn PDF document text
    • http://topitoxituzoju.iblogger.org/73190948329.pdfIn PDF document text
    • http://apeech.ru/64004071820cdgnu.pdfIn PDF document text
    • http://mitutepoka.medianewsonline.com/58665484033.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pebotavafusu.epizy.com/canon_eos_m10_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0f5e23c-8921-4279-826a-3ac2268ed59b/74130889670.pdfIn PDF document text
    • https://6bb2b61b-82bf-473b-8365-63ddb02ddbdd.filesusr.com/ugd/d55797_012e2473d779475783adfeba70ba2714.pdf?index=trueIn PDF document text
    • https://e46eb8ae-11b5-47af-91b5-79e2db369635.filesusr.com/ugd/f84671_871af05d324c4933850064ec36bff181.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/03528edd-2b80-4786-ad5b-3783a1558843/jands_vista_2048_dongle.pdfIn PDF document text
    • https://891dfe3a-8969-4df2-b253-5ccc4ebbb7a0.filesusr.com/ugd/e66789_4e12cd2c7cc94c9c89d92182d5d55926.pdf?index=trueIn PDF document text
    • http://xufoturimixeb.epizy.com/fifth_grade_dolch_sight_words_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55a1c37e-da0c-4a32-889c-1806e048afb9/56886271911.pdfIn PDF document text
    • https://f9fc249e-2e6a-4908-9eb0-88005465a50d.filesusr.com/ugd/2530ee_5f44cc0c82444cb38cafb803230a5bd0.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1632cc7e-d0ec-4878-be9b-dd381227a0ae/tipos_de_manuales_de_organizacion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dac80777-1dfc-40d5-8590-96cb274f5ef4/how_to_reset_maytag_centennial_dryer.pdfIn PDF document text
    • https://eadb47d6-6712-4ecd-aa5a-2cdcf2d90b86.filesusr.com/ugd/c844bf_b4f9ddf8675240edb0ed1173cacb96d2.pdf?index=trueIn PDF document text
    • https://c064424b-11a8-4e39-a524-24a74bcd733d.filesusr.com/ugd/54e393_aed2428a3049414199b425c0a5e1c511.pdf?index=trueIn 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_off00010d7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D7C 5520 bytes
SHA-256: 93c48b68aae46df1fcd3ca1682d8ef3ef8d51bbab3b688b0891b7a57657b2bfd
font_01_sfnt_off00012041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12041 10732 bytes
SHA-256: a59e24610ef4d2a07803f258ae78286bbe9b7eac426165ee206da5b148bd2587

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