Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa8aa8bd565a9df3…

MALICIOUS

PDF

60.5 KB Created: 2020-11-21 18:18:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 1be9c71669063ca14cf23da9e8553689 SHA-1: d5c7e1a70ca4a7ca950ca80d441288e4abae11a8 SHA-256: fa8aa8bd565a9df380685c20977427e96c058795e9745f58f5b0602189ae3809
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=powershot+pro+9100+manual In PDF document text
    • https://laxuruvu.weebly.com/uploads/1/3/1/4/131482832/dc35c0.pdfIn PDF document text
    • https://satobolusiv.weebly.com/uploads/1/3/1/3/131398412/f2a82215a.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/zokokamu/kuketuruxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3f91a9e-2296-44dc-8b98-8121b063b448/rulalododuxela.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/fufovidafebabofivubed.pdfIn PDF document text
    • https://s3.amazonaws.com/felijaziremole/apk_handler_for_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/pcr_amplification_protocol.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/29383526565.pdfIn PDF document text
    • https://s3.amazonaws.com/polojuliragam/chudi_jo_khanke_dj_song.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/bibliografia_con_normas_apa.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/pipedagiribem.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/wobogozuzatomoloj.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_off0000a9ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9EE 5500 bytes
SHA-256: 035df2a8aa4e1ad47bf2d21f39dfa1cdaa82628ef24d8909c74ac7146689f26c
font_01_sfnt_off0000bc88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC88 12972 bytes
SHA-256: 226af68b84b13bb23b34a31bfcc4ab24c2d31354b74d2adb45c56c6470f77a00

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