Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd5abf47cab54a50…

MALICIOUS

PDF

70.1 KB Created: 2021-03-09 16:55:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 3d1c4eb91303694e46b4568a63b10ef6 SHA-1: eea53a7c5d95fd1a3a4efbe6275dead9204edf9e SHA-256: dd5abf47cab54a50ca35a7e3c81bd86da837721273f4640f9fd7562ff46179f0
214 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, with at least one identified as a malicious redirector. The heuristic firings indicate a high likelihood of malicious intent, specifically related to phishing and link farming. The presence of embedded URLs and the ML classifier's strong flagging further support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/wix?keyword=saeco+talea+manual In PDF document text
    • http://lovechat24.club/jali_design_patterns5xz6r.pdfIn PDF document text
    • http://bristol-yalta.run/tenatixavizevovelazbzsr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445534/normal_5fcc2c520f010.pdfIn PDF document text
    • http://help-bluebadgecenter.com/vw_service_card_rebated8lzp.pdfIn PDF document text
    • http://kumululurug.scienceontheweb.net/titajofuzudasa.pdfIn PDF document text
    • http://rusewigojubilon.mygamesonline.org/jopaninosajesifik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366359/normal_5fe99c2967058.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://6b5d12f1-3bbc-48af-9ddb-5430d2fe15e7.filesusr.com/ugd/3bf302_214760e7d48c4735b1a5ba335455608c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tosevud/likufaz.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/82298985410.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/99725268631.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/2373459214.pdfIn PDF document text
    • http://kapirexazi.onlinewebshop.net/canon_vixia_hf_g30_battery.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/can_turtle_beach_stealth_600_work_on_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/bosajikesi.pdfIn PDF document text
    • http://zuzopejorexa.onlinewebshop.net/2007_honda_shadow_vt1100_specs.pdfIn PDF document text
    • https://d5fb4b5d-766d-4e54-ab1c-ecc61d2b7d82.filesusr.com/ugd/b0c8dc_95acd18a41584346957b4ed889494d1e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tobovunoberiki/baby_beautiful_photos_free.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/1984_scorecard_magazine_olympic_baseball.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE01 4608 bytes
SHA-256: 22dee8a5fc69f4c406d37f21defd5d06198f0c939286934be7e21a5f40088320
font_01_sfnt_off0000dd87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD87 9380 bytes
SHA-256: 595f0be11b4f5d348718057bb56e6edf355c3ce43f5ecdf20e7a49dddddafb6d
font_02_sfnt_off0000fd9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD9A 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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