Malicious PDF — malware analysis report

Static analysis result for SHA-256 606803ece51a70e7…

MALICIOUS

PDF

65.1 KB Created: 2021-02-24 13:54:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 69ba65049cb066c72da64b97494dba98 SHA-1: 29762661cba2af81a77976beeaf935263514aa6c SHA-256: 606803ece51a70e777148faac1db85a14af61f6c23a63785234603683f5fe6d7
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating a high likelihood of malicious intent. It contains a large number of external links, with the primary ones pointing to domains associated with potentially malicious content. The presence of embedded URLs and the overall structure suggest an attempt to redirect users to harmful websites, possibly for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://druttle.ru/wix?keyword=st+stanislaus+cemetery+modesto+ca PDF link annotation
    • http://septiki-rf.website/meaning_of_business_researchp87qw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365601/normal_5fdcc889ed16a.pdfIn PDF document text
    • https://ninibukakogim.weebly.com/uploads/1/3/2/8/132815385/kazopileputuj.pdfIn PDF document text
    • http://vabapagamowese.22web.org/bumupejip.pdfIn PDF document text
    • http://wamawebikojas.22web.org/flower_images_hd_wallpapers.pdfIn PDF document text
    • http://bestunew.xyz/nasa_image_selfiesebgaj.pdfIn PDF document text
    • https://mitenipup.weebly.com/uploads/1/3/4/3/134363071/4047499.pdfIn PDF document text
    • http://artelamp.store/hack_empires_and_allies_cheat_enginerdmfj.pdfIn PDF document text
    • https://najigojuvunijo.weebly.com/uploads/1/3/0/8/130874658/linesesowakowep.pdfIn PDF document text
    • http://somavifidovogi.iblogger.org/burewekefupawupumema.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/bulolimepol/how_much_does_it_cost_to_get_iso_9001_certification_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/75051761208.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/branches_of_applied_social_science.pdfIn PDF document text
    • http://gixogofano.rf.gd/how_to_factory_reset_surfboard_sbg6580.pdfIn PDF document text
    • http://zezewesiwakoruw.rf.gd/vutimatulakewenujelaso.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/bhojpuri_film_sasural.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_off0000c0a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0A6 5292 bytes
SHA-256: de41f335e4050a3984cd9f39adc9a585138d0875da3fbce371abbadac47f93a2
font_01_sfnt_off0000d28f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD28F 10844 bytes
SHA-256: c7ef9838e249eafb1ee306fef1ba760beda1e336743029665e1ffd7d735d1313

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