Malicious PDF — malware analysis report

Static analysis result for SHA-256 d92039c855ff8692…

MALICIOUS

PDF

82.1 KB Created: 2021-03-21 00:08:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 518498740fc3354982a8f29d1ba4421f SHA-1: 35fe6a0da199c3d4b2fcb227c2bf060ef5763a69 SHA-256: d92039c855ff86921e586a6e679b4e2cf198b1719c21ba0a72b512a4c9b615d1
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one prominent URL pointing to a site offering "basketball stars cheats 2020". This, combined with the ClamAV detection and ML classifier flagging, strongly suggests a phishing or scam campaign. The document's structure and embedded links indicate it's designed to redirect users to potentially malicious external sites.

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 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://midufefew.ru/wix?keyword=basketball+stars+cheats+2020 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4449603/normal_5fca212fb9337.pdfIn PDF document text
    • http://mitutepoka.medianewsonline.com/which_is_more_important_sun_moon_or_rising_sign.pdfIn PDF document text
    • http://modarab.mygamesonline.org/tecnicas_de_busqueda_de_informacion_en_internet.pdfIn PDF document text
    • https://cdn.sqhk.co/wifukatar/fBibjaz/zurilegipidafifasepe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501198/normal_603f2cc880e70.pdfIn PDF document text
    • http://kitigaw.22web.org/churake_dil_mera_goriya_chali_ringtone.pdfIn PDF document text
    • http://on-arenas.com/47082300562h5nna.pdfIn PDF document text
    • https://cdn.sqhk.co/lajawawinu/eJhhgzk/nipetewutamufuwa.pdfIn PDF document text
    • http://copyrightsupport-ig.com/12339062262pfyu0.pdfIn PDF document text
    • https://cdn.sqhk.co/pinofizulag/igdhjjb/sports_trading_card_photoshop_template.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366661/normal_605103664815c.pdfIn PDF document text
    • http://kopawaruda.22web.org/imagine_me_tahereh_mafi_summary.pdfIn PDF document text
    • https://cdn.sqhk.co/rorexamuviz/siggjqo/samsung_galaxy_core_prime_case_ebay_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/zixagiko/ekqQ0gg/tuzavotoworovagudad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377706/normal_5fd3bac0c3b96.pdfIn PDF document text
    • http://inmyshtangen.xyz/gunazilojomesuvufekigop4ddv3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488555/normal_5fd79bf592175.pdfIn PDF document text
    • http://becloud.website/wadonetamhcapp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fosagoba/how_to_become_rich.pdfIn PDF document text
    • http://nokarox.rf.gd/boye_round_loom_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/ematic_4k_ultra_android_tv_box.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF436 4936 bytes
SHA-256: db4a0b13ee9bcdf468fb25af58a2f696a64c833dd584fd501eec9b2fea94ab3c
font_01_sfnt_off0001050c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1050C 11824 bytes
SHA-256: 052f2d51dc8398ef8a77b63ba09118a0b337c23b74ec212d2baed3958851c031
font_02_sfnt_off00012cf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CF0 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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