Malicious PDF — malware analysis report

Static analysis result for SHA-256 75ce6457744bb474…

MALICIOUS

PDF

78.2 KB Created: 2021-03-21 07:42:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: bb8646fc90dae34d0b4438f69ce69ecf SHA-1: 51a40745f5ce21089e204014986d052b3b0b1732 SHA-256: 75ce6457744bb474451140352c0247964824b1912b108e32feeb666aad6aadcb
164 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. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://dugedepap.ru/wix?keyword=minecraft+full+game+apk+softonic PDF link annotation
    • http://cg-designer.xyz/uniformly_accelerated_motion_worksheetw43j5.pdfIn PDF document text
    • http://myshoes.moscow/49904891223vcdyv.pdfIn PDF document text
    • http://qwertyujg.xyz/cadet_college_petaro_admission_form_2019phlpl.pdfIn PDF document text
    • http://idealicaitalia-ufficiale.site/fabuzah6y3v.pdfIn PDF document text
    • http://inmyshtangen.xyz/23504359839k3g9q.pdfIn PDF document text
    • http://migriruy.ru/allworx_voicemail_to_email_setupwqzbj.pdfIn PDF document text
    • http://getchambre.xyz/95771912853xvxse.pdfIn PDF document text
    • http://hookup755.fun/padi_rescue_diver_course_bookwecch.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d25e5d79-f3dc-43ab-8538-58f2f4730235.filesusr.com/ugd/898300_822bfa5dbe414153b4fd40e855f7bdb3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sewamos/rumikem.pdfIn PDF document text
    • https://1eba3b37-3dce-45e8-aa15-e51a58efc0fe.filesusr.com/ugd/89e37c_3009b4d17d2149e0ad40f1a43b4526f5.pdf?index=trueIn PDF document text
    • https://7a579b3f-ce96-4c66-abdc-991530493d29.filesusr.com/ugd/010c6b_5c6841bfb9ef48ffa9443dc5202e754f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/garorowa/taviso.pdfIn PDF document text
    • https://93dbb2ad-f1e8-4c6c-adfd-2ef134399473.filesusr.com/ugd/df4650_92caf6459064458d945e575a533866a7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/28099666552.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/ferrari_roma_interior_colors.pdfIn PDF document text
    • https://c63359c4-faa5-40af-ad11-254ddd3d100c.filesusr.com/ugd/838c33_c9c1e245f268453fbc3d8f4ad26308b6.pdf?index=trueIn PDF document text
    • https://50fe66f1-00be-429c-ab6c-57a9f80d6ab9.filesusr.com/ugd/39cb9d_227df48b78864b91aa7f45ae644b1beb.pdf?index=trueIn PDF document text
    • https://aece7fbc-7072-4055-9cfa-29e0da41b620.filesusr.com/ugd/e878fd_e85e4253928a4fd1b78ad3a31f2fd73c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/molaridad_de_dos_disoluciones.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF494 5404 bytes
SHA-256: bd94aff71d37fe1239a20492a8d8e063276433b7e6f781aebd00211c14a5d88b
font_01_sfnt_off000106f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106F4 10916 bytes
SHA-256: d7db03ba93a12bc634feac1ee18a56385e845f0c2aae84a813710e877ad1e400

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