Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0362f41b0a6425d…

MALICIOUS

PDF

78.6 KB Created: 2021-03-14 21:47:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 2e140a466709d49df236dc6535e370be SHA-1: 2b7ee505ba37a3aa6127c285caa1152f89b3e32f SHA-256: d0362f41b0a6425d17abb238b157581a526be24568562389cd56559c5868150b
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crophysi.ru/wix?keyword=ancient+india+rivers+map PDF link annotation
    • https://cdn.sqhk.co/ronofumito/5LizIs5/babininazudefumagupa.pdfIn PDF document text
    • http://lotukaguw.sportsontheweb.net/xuxugekobabifi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478378/normal_60081b7fc30f9.pdfIn PDF document text
    • http://rigoditibalun.mywebcommunity.org/ninja_blender_professional_prep_system_accessories_for_food_processor_attachment.pdfIn PDF document text
    • http://kugaraginoja.mypressonline.com/bafemuzu.pdfIn PDF document text
    • http://pl50off.info/general_tso_chicken_sauce_easy7b2e5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505820/normal_5fe4f8f18523f.pdfIn PDF document text
    • http://marketitaly.info/winning_jack_welch_summaryvik4v.pdfIn PDF document text
    • http://ipai.online/lycoming_io_320_service_manualtquww.pdfIn PDF document text
    • http://marketitaly.info/hopdoddy_menu_el_segundo0stk7.pdfIn PDF document text
    • http://vezerfa.xyz/can_you_order_from_old_navy_onlinexz7xn.pdfIn PDF document text
    • http://itverys.space/49629421838gszoj.pdfIn PDF document text
    • http://grandov.pro/319917391330ux7p.pdfIn PDF document text
    • https://cdn.sqhk.co/zidulibu/hehgnhM/heritage_auctions_dallas_tx_u._s._a.pdfIn PDF document text
    • http://circleshtang.xyz/digitech_gnx3000_software_downloadnbytg.pdfIn PDF document text
    • https://cdn.sqhk.co/sogunixe/SjihebP/nefoxanigosodumiduzuxu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406473/normal_6038082075da1.pdfIn PDF document text
    • https://cdn.sqhk.co/simunenij/Igdjb9Q/lakilok.pdfIn PDF document text
    • https://cdn.sqhk.co/levowexesu/j4I9nVZ/calibria_crystal_guardians_tier_list.pdfIn PDF document text
    • https://cdn.sqhk.co/dixejetafap/33VFqjc/dojupujarimejarixasi.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwasokeg/9sgdGie/hangouts_dialer_download_apk.pdfIn PDF document text
    • http://mjawebdesign.net/how_do_you_become_a_certified_food_safety_manageruc06l.pdfIn PDF document text
    • https://cdn.sqhk.co/rapowipijes/Gvibkji/69588566435.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://davofunup.onlinewebshop.net/conversion_of_units_in_physics_worksheets.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_off0000f5cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5CD 5236 bytes
SHA-256: 3ae4d36f5b6b51a7b714ed9a0a3b1362840162e9d0faf8a52c642b59eee68bfd
font_01_sfnt_off00010792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10792 10380 bytes
SHA-256: 14aae05ea616415e6188416f744c84e1948be1d6eab560c72dc0e92a6784f9e4