Malicious PDF — malware analysis report

Static analysis result for SHA-256 15d0e952c0cc27e8…

MALICIOUS

PDF

73.7 KB Created: 2021-02-19 20:02:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 7bd7b5eaffee3a62920301576e688406 SHA-1: 60e98264159707d787d3e6087752c453cf027786 SHA-256: 15d0e952c0cc27e8d8a9918ea542ad000f0462393a5dd9cb4946139610d267f7
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, forming a link farm, and specifically directs users to a URL related to 'nba 2k18 apk download'. This suggests a phishing or scam campaign designed to drive traffic to malicious websites. The ClamAV detection and ML classifier further support its malicious nature, indicating it's likely a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • 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://druttle.ru/wix?keyword=nba+2k18+apk+download+apkparadise PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4470698/normal_5fe19eb6e3854.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498366/normal_5fc9da8553819.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371786/normal_5ff65826bbf02.pdfIn PDF document text
    • https://cdn.sqhk.co/xegogeji/idhiajb/acr_master_assassin_badges.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454054/normal_5fdb37f72631d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411917/normal_5fda9445a7583.pdfIn PDF document text
    • https://cdn.sqhk.co/pogezasamu/ifvieg4/kpop_album_download_free_zip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485926/normal_601dd4a63b39b.pdfIn PDF document text
    • https://cdn.sqhk.co/teposodigar/bHkhejd/scary_movie_amazon_prime_free.pdfIn PDF document text
    • https://zulunapakaf.weebly.com/uploads/1/3/1/0/131070820/ab55d6.pdfIn PDF document text
    • https://xogiwudib.weebly.com/uploads/1/3/4/7/134715522/famudiwigum-meraboxo-xodiwuf-siruxetosuwapon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411481/normal_5fe4dab0e98c7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465267/normal_5ffc93ed75a1c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494674/normal_5ff44ea768db8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408701/normal_6008c04fcc6b7.pdfIn PDF document text
    • https://cdn.sqhk.co/bowazeduz/haORehe/suria_fm_online_radio_playlist.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481821/normal_60183b60a514b.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/luxelula/restaurant_business_plan_powerpoint_presentation_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bejexe/pdf_to_word_software_best.pdfIn PDF document text
    • https://s3.amazonaws.com/girilifawuxi/samsung_galaxy_always_on_display.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/34405311294.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_off0000e360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE360 5596 bytes
SHA-256: d377d2e31c3501e93c368d2a07973a4144828bc5f9b748a2c19563bb141fb8b6
font_01_sfnt_off0000f693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF693 10076 bytes
SHA-256: 56c1b0d097308ba2b8b32badc10305554b6d2a40f3a8555023b2f2b31f51062b

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