Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fdcd4dbfb095ef6…

MALICIOUS

PDF

65.1 KB Created: 2021-01-24 05:45:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 65a2ccb4336a07b2ccaaca21fa8f4830 SHA-1: e2d6f4bfe9710d965cb74e2ef34452fa36ce983f SHA-256: 1fdcd4dbfb095ef61a6897bef014e7fe21f57f947d8c18c71f5d29f3c5443b38
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to lure the user to a malicious site.

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://traffmen.ru/123?utm_term=laemmle+theatres+pasadena+showtimes In PDF document text
    • https://cdn.sqhk.co/xafemepino/chbgcF6/ava_lockscreen_apk_pro.pdfIn PDF document text
    • https://gisoroweri.weebly.com/uploads/1/3/4/8/134893792/nesav_wigimi.pdfIn PDF document text
    • https://cdn.sqhk.co/puwetudul/Ehhhhay/bedisawinigokuram.pdfIn PDF document text
    • https://cdn.sqhk.co/vupapevixu/ifjchjC/sodixapuj.pdfIn PDF document text
    • https://site-1174582.mozfiles.com/files/1174582/nba_2k21_best_slashing_badges.pdfIn PDF document text
    • https://cdn.sqhk.co/miwurazaz/uEogdFi/vokufamunalol.pdfIn PDF document text
    • https://rupokolox.weebly.com/uploads/1/3/0/8/130813141/voxef.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/wowonesoribu/56078661303.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/boborurogoxaromiwis.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/upsc_calendar_2020-_21.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/salmon_fishing_report_oswego_new_york.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/72846350844.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/commercial_invoice_template_canada_fedex.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_off0000c080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC080 5232 bytes
SHA-256: 2c8ca56c7cf2bfb79661c8aeb64c1d10fddb8817cab7b3b5ac92666eaa9f4cbb
font_01_sfnt_off0000d231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD231 11100 bytes
SHA-256: bf53eef3b094a0e7502436f88928cbe6b5214725f8dcca8ba88eabd48826f431

Open this report in the interactive analyzer, or submit your own file for analysis.