Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c22d2ec2e10dde6…

MALICIOUS

PDF

66.2 KB Created: 2020-11-18 00:59:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 30b299c2038920fc9bfd6f41fcbee4ca SHA-1: 4c59a9abda28da2db608ce22ceaff35e4489ab79 SHA-256: 2c22d2ec2e10dde69e7a5792192a695a48cb462576018ae43cabc3c6fc8d17fd
214 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure and a PDF link farm. The embedded URLs suggest an attempt to lure users to external sites, likely for phishing or to download further malicious content. Although no scripts were explicitly extracted, the PDF structure and link farm indicate a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://cctraff.ru/aws?utm_term=centreport+wellington+wiki In PDF document text
    • https://kasifezozubitux.weebly.com/uploads/1/3/4/6/134657511/biwiv-foriveraj-konodog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449622/normal_5fab208031c65.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/7456368.pdfIn PDF document text
    • https://falizuzu.weebly.com/uploads/1/3/4/5/134506804/gabip.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/nerugiraxura/jopunuxizogemotigiku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fb2918b-4cab-4179-80c6-07f824d219f3/where_is_billy_fuccillo.pdfIn PDF document text
    • https://s3.amazonaws.com/damevusom/stamp_appraisal_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e24a6625-35d8-432d-af9b-c083ea5747a9/33077494718.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/the_wizard_of_oz_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/osrs_black_dragon_slayer_guide.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_off0000c5f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5F1 4660 bytes
SHA-256: 938cb871655b0ace1cebc708afa9c47424ee409c7c2f5958f24e738e318b2095
font_01_sfnt_off0000d5f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F0 11488 bytes
SHA-256: fb68676ef1c2fdb19a144e00979fa31be942b8a9d09818bfe7887e573497f260

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