Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d1386130012d803…

MALICIOUS

PDF

72.4 KB Created: 2021-04-01 16:29:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 5945eae7701361ebf1d0466d3f51e620 SHA-1: 72a2235c5e0370ea6f11632cf6d96a2aee2cf8ba SHA-256: 6d1386130012d803d6d57ed330e68fe3312896cb140c7c1d759622dc2d4c1d60
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or SEO manipulation tactic. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The embedded URLs and the document's structure point towards an attempt to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://kuzutuzo.ru/award?keyword=rudram+namakam+chamakam+sanskrit+pdf+download PDF link annotation
    • https://ranilabat.weebly.com/uploads/1/3/5/9/135999147/gesitogiferikubapo.pdfIn PDF document text
    • https://bazafegaxu.weebly.com/uploads/1/3/1/3/131383427/1dff19d3c2.pdfIn PDF document text
    • https://vuxomikegivu.weebly.com/uploads/1/3/1/4/131453843/suvivakigif.pdfIn PDF document text
    • https://bimidofun.weebly.com/uploads/1/3/4/4/134460432/3287601.pdfIn PDF document text
    • https://cdn.sqhk.co/nixivezez/hn48nOl/dunkin_donuts_menu_drinks_charli_d_amelio.pdfIn PDF document text
    • https://cdn.sqhk.co/sosexazefip/igh4mge/movies_anywhere_digital_codes_free.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/hcFhfja/scor_pal_mini.pdfIn PDF document text
    • https://cdn.sqhk.co/jatobeguji/hhjigId/vuxijosofujeniboketikep.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415950/normal_5fe697b56200f.pdfIn PDF document text
    • https://mazerobuwi.weebly.com/uploads/1/3/1/3/131398334/fosibo.pdfIn PDF document text
    • https://cdn.sqhk.co/xujutitula/Khgecjc/original_rider_waite_tarot_deck_australia.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427506/normal_5fdc4b94989a9.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/sitok/663519057.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/mushkil_paheliyan_in_urdu_with_answer.pdfIn PDF document text
    • http://nutimuratibuzur.epizy.com/32313772285.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/ladokanurikab.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/3129405601.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/capitalization_worksheets_10th_grade.pdfIn PDF document text
    • http://boterusor.epizy.com/16827123246.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/60270731426.pdfIn PDF document text
    • http://dejedizanabi.epizy.com/kobogigironep.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/bebomarufuzetejotagiz.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/chevage_formariage_mainmorte.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/50303432902.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_off0000dc0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC0F 5560 bytes
SHA-256: 2ce6e248aee7f0ae8173bbeea2dd8feeb1ac0161024524cf5202eb44e1d92613
font_01_sfnt_off0000eee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE6 11280 bytes
SHA-256: 0a53ecf75ed7def28faf5a96cf438b71aae20836cfbf9cfec03724908acedc1a

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