Malicious PDF — malware analysis report

Static analysis result for SHA-256 c48f656103f68e5d…

MALICIOUS

PDF

70.2 KB Created: 2021-02-25 05:38:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: eac8ce41083fa5d8a327db585f977edd SHA-1: 689c2c0acfb48f6a17cf432026fd5c698724d4e5 SHA-256: c48f656103f68e5d1929ab449e466300c6f011b02a7b4bd23e16d7dd9f8b4d0d
134 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, suggesting a phishing or malware distribution scheme. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, contains keywords related to 'gaming executor hack', aligning with the lure of a download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jacksth.ru/wix?keyword=tomty+gaming+executor+hack PDF link annotation
    • http://wejowadizabudex.mypressonline.com/how_much_does_it_cost_to_run_a_gas_wall_heater.pdfIn PDF document text
    • http://likedizar.medianewsonline.com/woxinedurul.pdfIn PDF document text
    • http://giwapozolaleg.mypressonline.com/kafezexit.pdfIn PDF document text
    • http://mojadejazisapa.sportsontheweb.net/4460718586.pdfIn PDF document text
    • https://gujowidupisume.weebly.com/uploads/1/3/4/1/134131448/906ad0.pdfIn PDF document text
    • https://mututekabifu.weebly.com/uploads/1/3/4/4/134466573/2865665.pdfIn PDF document text
    • https://wesuzimowigimeb.weebly.com/uploads/1/3/4/7/134745326/bekiraxijub.pdfIn PDF document text
    • https://divamokavagi.weebly.com/uploads/1/3/4/8/134871471/2024725.pdfIn PDF document text
    • http://japancar-sib.ru/xofotewutevaxojuq2h9l.pdfIn PDF document text
    • http://zipubezexupoka.mywebcommunity.org/minn_kota_10_ft_raptor.pdfIn PDF document text
    • http://healthytrands.com/vales530x5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jabodegodonirad.atwebpages.com/how_to_remove_rosetta_stone_from_mac.pdfIn PDF document text
    • http://giwofigu.epizy.com/39177723406.pdfIn PDF document text
    • http://tiluxusimutine.atwebpages.com/67435193848.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/7802316115.pdfIn PDF document text
    • http://wutejaxevewef.myartsonline.com/19818644124.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_off0000d7f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F9 5184 bytes
SHA-256: 5e00690d7bf603bbeedc545fced2f58c2bffa15c4abe42d45dbb2e9b7873caf0
font_01_sfnt_off0000e985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE985 10148 bytes
SHA-256: fb79596fdbc78db6b16b903f33c7b064a85132424832a40f86cc04ce7b66d3fd

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