Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd301c6a17aca72e…

MALICIOUS

PDF

111.2 KB Created: 2020-12-30 04:31:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 234a70b86a3cdc138151c8548abde769 SHA-1: 82db2f5948803920d78f78acdac0555878e70560 SHA-256: bd301c6a17aca72ef5e0d4d17b4bf8911e77897af95513ee24f7f213a93f9ca0
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many of which point to link farms or redirectors, indicating a phishing or SEO manipulation attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing campaign designed to lure users to malicious sites.

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://ggtraff.ru/123?utm_term=top+o+matic+t2+instruction+manual In PDF document text
    • https://cdn.sqhk.co/fopujetoros/X0vjjfd/theme_park_simulator_trophy_guide.pdfIn PDF document text
    • https://bigimenuxorotel.weebly.com/uploads/1/3/4/6/134655509/7d06611.pdfIn PDF document text
    • https://cdn.sqhk.co/ralapogifur/zt3geja/puppy_wallpaper_hd_1080p_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/faxiwapa/SCT2CXr/drawer_track_replacement_parts.pdfIn PDF document text
    • https://cdn.sqhk.co/kaxovugefulo/gejaSpk/gopro_parkour_fails.pdfIn PDF document text
    • https://cdn.sqhk.co/fejavegiwo/gf4UPvt/vilatalup.pdfIn PDF document text
    • https://kemipopebu.weebly.com/uploads/1/3/4/5/134585234/juvowodubavup_samuloxololu_natetetoxi.pdfIn PDF document text
    • https://cdn.sqhk.co/vuxevabuvix/gsjeIjg/wolf_wallpaper_4k_android.pdfIn PDF document text
    • https://cdn.sqhk.co/vumivatuvi/UILmKdt/best_punjabi_ringtone_download.pdfIn PDF document text
    • https://bufetijakuvarit.weebly.com/uploads/1/3/4/8/134878832/fuzugixopuzesetilef.pdfIn PDF document text
    • https://renobikedasel.weebly.com/uploads/1/3/4/8/134897329/6223633.pdfIn PDF document text
    • https://cdn.sqhk.co/zudilubal/fqgd8hg/switch_console_only_ebay.pdfIn PDF document text
    • https://cdn.sqhk.co/zenetofuma/KRhiibU/disabolem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://doi.org/10.25058/1794600X.140In 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_off0001791d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1791D 5160 bytes
SHA-256: d59e3d4aaf852aae824985e309ff81dd6ac30750d4c6dff0e58816aeacb17d1f
font_01_sfnt_off00018a92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18A92 11356 bytes
SHA-256: ef572d71ab63ad5cd4361a58cb8aa9c1d5150709930c9d32d2521fd8371658a6

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