Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0350ae44edb4060…

MALICIOUS

PDF

63.7 KB Created: 2021-01-22 12:53:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 812ea6ece61ab5f8e07449144ec06f18 SHA-1: 82497ae65d7a258f6ceb15ba9ab414eea6d50122 SHA-256: e0350ae44edb406016ff4c6474a4b1e65826b387712e071402e04bbf39462ce5
206 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://leonvi.ru/aws?utm_term=coshh+data+sheets+tesco PDF link annotation
    • https://site-1258794.mozfiles.com/files/1258794/bubble_bobble_para_celular_android.pdfIn PDF document text
    • https://cdn.sqhk.co/jolodovi/ijfoNS7/3142334744.pdfIn PDF document text
    • https://xomitemekebok.weebly.com/uploads/1/3/4/8/134881854/gumuvojuvajufasasuz.pdfIn PDF document text
    • https://cdn.sqhk.co/dofofoziga/jhjgjgd/funny_animation_movies_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/remowiwa/ghPhbhh/piparejavaloxafib.pdfIn PDF document text
    • https://cdn.sqhk.co/gadewekunel/NVg1jfD/33567513174.pdfIn PDF document text
    • https://site-1198644.mozfiles.com/files/1198644/68238874026.pdfIn PDF document text
    • https://site-1199825.mozfiles.com/files/1199825/zombie_prison_escape_saw_game_solucion.pdfIn PDF document text
    • https://jafobepajimo.weebly.com/uploads/1/3/4/8/134881918/7556f87ef3.pdfIn PDF document text
    • https://xaxafojub.weebly.com/uploads/1/3/0/7/130738676/zoxuvutigul.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwewiwudesi/YB4v4EC/sticky_blocks_walkthrough_level_5.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/kigavanus/audiolibro_el_alquimista_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/21438585989.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/vuvububona.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/studio_ghibli_piano_and_violin_sheet_music.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_off0000bcd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCD4 4804 bytes
SHA-256: 9892d104d32be80bab08a2722b921fabcafdccf05d3620c093489a01fed0a0dc
font_01_sfnt_off0000cd23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD23 10824 bytes
SHA-256: 16684c749d42a25adbe6f829a8c183ef6f143d6d375be19fb76e6be95f17281c

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