Malicious PDF — malware analysis report

Static analysis result for SHA-256 234bb2d2ebdadb46…

MALICIOUS

PDF

86.9 KB Created: 2021-02-10 06:47:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 2a9cc42ea2f3eb2a4f1d892637dcaf9a SHA-1: 5bd9438a7aad7920566e3b1222e44e3618f64bec SHA-256: 234bb2d2ebdadb46df3d8b24be6df626c6b48c258b67e024f839e6ee547a311d
224 Risk Score

Malware Insights

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

The sample was identified as malicious by ML classifiers and ClamAV, with critical heuristics indicating a brand-impersonation credential phishing lure targeting Disney. It contains numerous external links, many pointing to potentially malicious domains, and one specific link to a Weebly-hosted PDF designed to phish credentials. The document body, though heavily obfuscated, contains text related to copyright and worksheets, likely a lure to entice users to click the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://kuwumezebuxe.weebly.com/uploads/1/3/4/1/134131528/xaroj.pdf.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://bologen.ru/123?utm_term=copyright+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/gawivoxolo/7gchigc/best_heroes_of_might_and_magic_3_strategy.pdfIn PDF document text
    • https://kuwumezebuxe.weebly.com/uploads/1/3/4/1/134131528/xaroj.pdfIn PDF document text
    • http://rollernefrit.xyz/stickman_and_gun_3_zombie_shooter_android_1nnr80.pdfIn PDF document text
    • https://cdn.sqhk.co/sutadejuna/jgdjhjj/diep_io_tag_game_modes.pdfIn PDF document text
    • https://boxijobanopuvob.weebly.com/uploads/1/3/0/7/130739783/2ee8231829e1e3f.pdfIn PDF document text
    • http://siondez.ru/800442947170j7t9.pdfIn PDF document text
    • https://gezedasi.weebly.com/uploads/1/3/1/3/131378850/bediverugalipixirimi.pdfIn PDF document text
    • https://wixozini.weebly.com/uploads/1/3/4/3/134383912/602b03aa09be.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/hiidHif/logef.pdfIn PDF document text
    • http://m-ryanaf.site/48859257846l57ik.pdfIn PDF document text
    • https://cdn.sqhk.co/tupipitijil/gejbdgk/pubogovabufos.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/jukoxisojow/academic_poster_template_powerpoint_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/agreement_template_india.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/rome_colosseum_guided_tour.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/87392480741.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/billo_thumka_laga_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/plastic_bottle_greenhouse_build_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/97951009074.pdfIn PDF document text
    • https://s3.amazonaws.com/rurosaveruk/cancer_de_mama_articulo.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/avatar_star_online.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/faxos.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_off00011613.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11613 5212 bytes
SHA-256: 48e0986bbb302e066deb7f22f297995c6ed0688fc66fa571745de7ced11cb922
font_01_sfnt_off000127de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127DE 11220 bytes
SHA-256: 9259fe63085d5d2fd806890953c88278492ed51d0f244dbbe21f7bf7f247cd13

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