Malicious PDF — malware analysis report

Static analysis result for SHA-256 04207347e3b70b07…

MALICIOUS

PDF

69.4 KB Created: 2020-12-20 13:44:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 7ccde52531824244920031a5d7885211 SHA-1: 18bf71a7d9870f00b508f5a08a8d7ce4c2d6f5f2 SHA-256: 04207347e3b70b07966a39ef97c5f963135f089dcf8ec190b48c7f2b0e36c3ab
244 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF contains a significant number of embedded links, many pointing to disposable domains and redirectors, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely involving exploitation of PDF vulnerabilities to execute further payloads. No scripts were extracted, but the structure and URL analysis point towards a phishing or malware delivery campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ggtraff.ru/strik?utm_term=fuzz+face+pedal+eric+johnson In PDF document text
    • https://dutedurelixuvu.weebly.com/uploads/1/3/4/3/134320021/4b8a5a48.pdfIn PDF document text
    • https://vufepuxo.weebly.com/uploads/1/3/4/5/134522835/kusiditudo-wikixalomutugi-zegakidagusofar.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374715/normal_5fc675d2dd255.pdfIn PDF document text
    • https://birivuben.weebly.com/uploads/1/3/4/6/134618962/dilowulowowodegaru.pdfIn PDF document text
    • https://sibakixode.weebly.com/uploads/1/3/2/8/132814768/671e2e5e0646791.pdfIn PDF document text
    • https://katubebadidi.weebly.com/uploads/1/3/4/4/134474785/jedolejituz_zedasagodatej_jamuwigageg_lasokibusev.pdfIn PDF document text
    • https://bugasidajuw.weebly.com/uploads/1/3/1/8/131856032/bitariloj-zaximikoduwujeb-gufanagowufi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423700/normal_5f9c3c270c63c.pdfIn PDF document text
    • https://rarekupop.weebly.com/uploads/1/3/4/0/134012473/b2b4936.pdfIn PDF document text
    • https://xizilajonufu.weebly.com/uploads/1/3/4/5/134528384/sogogupeb_safikukijurako_gobowivudov.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://s3.amazonaws.com/voxipanovigepiv/indian_visa_application_form_canada_toronto.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/vowadus.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_off0000c617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC617 5124 bytes
SHA-256: 94364dd279c4dd38eb86fa80d990849ef34f63d92f393b21361d30905ffade0a
font_01_sfnt_off0000d774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD774 10212 bytes
SHA-256: 9beb9cf461b1609ca2900f788edeeef535cc20772e31647fb2c3b7292ae70fa1
font_02_sfnt_off0000fa8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA8D 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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