Malicious PDF — malware analysis report

Static analysis result for SHA-256 c214d61e2b297f09…

MALICIOUS

PDF

134.3 KB Created: 2021-03-14 22:30:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 06bfe7d7de7d9987b88f8f8028965f1e SHA-1: 21eb1734af45b918972a27ded438ea8d5f59cbc3 SHA-256: c214d61e2b297f09207f7bf6f6f29e308214f2abc40ec91285c8e216b8db41df
134 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. 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 0.9916

Heuristics 6

  • 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.
  • 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://jumiwimov.ru/wix?keyword=cookie+clicker+achievements+mobile PDF link annotation
    • https://cdn.sqhk.co/gasupewu/J3gckhc/kukemuwilurejizazitepade.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452863/normal_5fccb57410db9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376601/normal_5fd79cf89e0c0.pdfIn PDF document text
    • http://svoydvalend.xyz/apologize_email_for_wrong_information6n017.pdfIn PDF document text
    • http://noverst.xyz/woramijipaxigadasawutejdslxr.pdfIn PDF document text
    • https://cdn.sqhk.co/ripalufix/haSjdF0/84207742242.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421474/normal_604cecbb0b167.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368228/normal_5ff0330ec283e.pdfIn PDF document text
    • http://reactivaperu-viabcpi.com/jennifer_egan_a_visit_from_the_goon_squad_reviewz60qx.pdfIn PDF document text
    • https://cdn.sqhk.co/liralimujote/ahfhjjc/6794336124.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369909/normal_6003f53a5888d.pdfIn PDF document text
    • http://menformula.xyz/canoscan_lide_210_drivers_download5j6sa.pdfIn PDF document text
    • http://reduslim-officialsite.site/dejegutujakidezio8m61.pdfIn PDF document text
    • http://trynutra.shop/how_to_reset_consumer_cellular_phonehwvdz.pdfIn PDF document text
    • http://uaregroup.com/97186200454h1651.pdfIn PDF document text
    • http://retys.space/pulumatogibadarokuvudud2av8b.pdfIn PDF document text
    • https://cdn.sqhk.co/wularumijif/idjdgdm/off_road_forest_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xudekutof/6icjbmK/king_of_thrones_map.pdfIn PDF document text
    • http://bandalet.club/97291274271xaica.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/fefurorobumi/97553023890.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/71188634543.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/buffalo_ny_tour_guide.pdfIn PDF document text
    • https://1e35b969-1f99-48dc-8aa8-d0fb9638bdc8.filesusr.com/ugd/970baa_2c76e1f37f5a49e7bc79ccbe221174c0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jovekus/fone_bluetooth_lg_hbs_800.pdfIn PDF document text
    • https://3ecb585b-79b8-4502-8567-d9a17299c5c1.filesusr.com/ugd/4b874d_86e4a3c4c16b40e6a1929ade01fe34e1.pdf?index=trueIn PDF document text
    • https://4c69d07c-928c-405f-a1ab-6436392658c4.filesusr.com/ugd/4c264d_6c2a3b8de49941a6ad06293d234851a9.pdf?index=trueIn PDF document text
    • https://e9593579-f51f-4dc6-af55-2543ab512b45.filesusr.com/ugd/37952c_2e45ac801f644690a2091762a10ee73c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zozofufulolig/76318345559.pdfIn PDF document text
    • https://3f5765b5-411c-4b28-96d1-a1e3b219bcee.filesusr.com/ugd/ca847e_d0757487b98343b788be0602fee4c119.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_off0001c6e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C6E5 5208 bytes
SHA-256: 6ee2d16e9e2c2d10e3a0d33a8ca5501c248206ed38095fe73e501b11a77cff82
font_01_sfnt_off0001d870.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D870 15176 bytes
SHA-256: 1938beca513b2f3da6978338dfaa1428c748ef08e893c477be8bd3936dd02587