Malicious PDF — malware analysis report

Static analysis result for SHA-256 574c9f4e8543b1d4…

MALICIOUS

PDF

94.0 KB Created: 2020-12-19 10:35:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d7a6fba270af250cb2e516acbf1a18df SHA-1: cbd80523d58b73e5f713fda123782a833071f9ab SHA-256: 574c9f4e8543b1d4077e2113094af5b1f5084d52ed70fc79ee3a9fe93ccc3dd1
214 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, with at least one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to drive traffic to various sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=calculus+single+variable+3rd+edition+answers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4421782/normal_5f9e76ddbdb92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421639/normal_5fa5dab74b8a9.pdfIn PDF document text
    • https://lasomuvexovip.weebly.com/uploads/1/3/0/8/130813571/sirofuduwolopa_fubewesoke.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe230fbc819f1cf4a1baf3/1606296335786/nejiwuka.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/niccol_ammaniti_anna_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/1884842765.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc560e5ea4a794d566315e0/t/5fce998b0b1ac23e3f0ac192/1607375243999/road_trip_beer_pong_download_480p.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/analisis_bromatologico_de_pastos.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/27536726799.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/analog_to_digital_converter_basics.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/36621265225.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/manual_system_restore.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_off0001306b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1306B 5468 bytes
SHA-256: 200a76feda1c36e208cf6cfbae581d38f1c743a705b3e6c2c7fa4e0a465451c1
font_01_sfnt_off0001431a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1431A 11996 bytes
SHA-256: e9cfc6aadbcf91e701386a019b4568b018dc49410740fe89e433f5c94bc7b063

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