Malicious PDF — malware analysis report

Static analysis result for SHA-256 e14d06b878f14358…

MALICIOUS

PDF

83.5 KB Created: 2021-05-06 22:40:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 1c99a0a821d29813e61c530166eb2522 SHA-1: 6e01244b82bf4d76304458fbeed0d0fc63dadf29 SHA-256: e14d06b878f143588a7f7a3f7ffc348bc7f4cf2964bdbac079321084d20cb433
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are dynamically generated and point to potentially malicious domains. The heuristic 'PDF_SEO_LINK_FARM' indicates a deliberate attempt to create a link farm, likely for SEO manipulation or to host phishing content. The presence of multiple unknown URLs and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggest a phishing or malicious content delivery scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://mezovuduw.ru/strik?utm_term=world+war+z+game+of+the+year+edition+xbox+one PDF link annotation
    • https://tobadagagu.weebly.com/uploads/1/3/4/7/134750152/9591ae3bb2846f7.pdfIn PDF document text
    • http://idealicaitaly-ufficiale.site/rayman_adventures_keine_incrediballsf5iam.pdfIn PDF document text
    • https://fufuwotasivixi.weebly.com/uploads/1/3/5/9/135966690/logonafabig_vojuradered_wewujonefu_detufof.pdfIn PDF document text
    • http://premiumpornclips.com/financial_report_typesp6e61.pdfIn PDF document text
    • https://komanibinepo.weebly.com/uploads/1/3/4/5/134588578/8925392.pdfIn PDF document text
    • https://segitosul.weebly.com/uploads/1/3/4/8/134886040/metenizejipi.pdfIn PDF document text
    • https://bixaguvukimub.weebly.com/uploads/1/3/1/8/131872105/livixekubimanet-denumijigodumok.pdfIn PDF document text
    • https://luluroruzole.weebly.com/uploads/1/3/0/9/130969682/4851555.pdfIn PDF document text
    • https://pixipemojawipe.weebly.com/uploads/1/3/4/4/134459682/1304376.pdfIn PDF document text
    • http://constructionhouse.info/pokemon_storm_silver_rom_with_cheatsvbuzx.pdfIn PDF document text
    • https://nosovaranipad.weebly.com/uploads/1/3/4/7/134743093/9006773.pdfIn PDF document text
    • https://pegujugadul.weebly.com/uploads/1/3/1/6/131637136/dc3b7.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/padosumifubobo/akcent_kamelia_song_320kbps.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/vokabov.pdfIn PDF document text
    • https://2ed821ec-8078-4e74-b11b-c5cec6a88262.filesusr.com/ugd/65e777_351dc80d11c8414b9ca594a1d765c99f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rejiner/is_business_analytics_a_good_course.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/buwepuju.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/drive_location_android.pdfIn PDF document text
    • https://689a2394-1721-4ce0-b6f7-af9f1dc0d621.filesusr.com/ugd/0f5b72_498f0583e00b4370bd8497d0bfbff4dd.pdf?index=trueIn PDF document text
    • https://fc06435f-e709-4c80-b59d-96fa470c1a13.filesusr.com/ugd/bdc04d_5961b6711d9d4465b643ee99fd63e2df.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF959 5396 bytes
SHA-256: 32cc0718204a0dd925cc9081b4e989221dec17bddce4ff018d1a5111d6cfb781
font_01_sfnt_off00010bb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BB1 10744 bytes
SHA-256: 183fdc48b5b76b8cc82b7051ce3bc7a8270ed044569a6be0a4158d697670c70e
font_02_sfnt_off00013057.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13057 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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