Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d55f14151bc7eba…

MALICIOUS

PDF

68.6 KB Created: 2020-12-04 04:21:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 086a28ba13f0c881da18fff9cf99ad82 SHA-1: 7c56946ca56248c27a5e21829e18b88a678d7559 SHA-256: 2d55f14151bc7eba5580eb3162de82b362706eac464395f3ffc0f6e1ca46f6e8
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and the ML classifier strongly indicate malicious intent. The document body, though truncated and obfuscated, suggests a lure related to 'customer journey map free powerpoint template', which is a common tactic for phishing or malware distribution.

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://gettraff.ru/aws?utm_term=customer+journey+map+free+powerpoint+template In PDF document text
    • https://cdn-cms.f-static.net/uploads/4381973/normal_5f932ccb3b3f7.pdfIn PDF document text
    • https://tijesefufejeje.weebly.com/uploads/1/3/4/8/134858706/36054693a7846.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383703/normal_5f8bdd1222187.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413458/normal_5fa86ffd0ac35.pdfIn PDF document text
    • https://rigonabex.weebly.com/uploads/1/3/1/4/131483185/saxexovupewub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460686/normal_5fa69aa96f57e.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/vonusirukete/coasters_sheet_street.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/baburnama_in_hindi_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/directions_to_summerville_ga.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/disbursement_voucher_form.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/template_for_weekly_planner_free.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/scratch_2_free_windows.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/41325557460.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/gnomeregan_guide_classic_wow.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_off0000cf2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF2A 5220 bytes
SHA-256: 3b30cc3cfb59448c2de80c18e6635e7f5e7d1c39a203600b7952f06db42d97d5
font_01_sfnt_off0000e0e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E9 10628 bytes
SHA-256: dd3d9b0bf6d824e721b270eec5b3ea5594a1c1ad39ed6c48cc76cad591f390e5

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