Malicious PDF — malware analysis report

Static analysis result for SHA-256 46010f8c73f0b67a…

MALICIOUS

PDF

83.1 KB Created: 2021-03-24 04:41:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: b28c46e05cd62339c4981f1b8990ee1f SHA-1: 4858d55359c6bfb5160d6e2270bb0f13765d893c SHA-256: 46010f8c73f0b67a2063a54d10a3450fa01fd6df4fd07c83ac6702adf6917984
156 Risk Score

Malware Insights

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

The PDF document contains numerous external links, with one prominent link appearing to be a search result lure for 'endgame watch online free reddit'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links were generated, suggesting a phishing or SEO spam campaign. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious classification. No scripts were extracted, but the document's structure and embedded URLs point towards a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wix?keyword=endgame+watch+online+free+reddit PDF link annotation
    • https://cdn.sqhk.co/terasovo/KPV93gi/50664540612.pdfIn PDF document text
    • https://cdn.sqhk.co/zexoribuj/hdMV0Wl/battery_daddy_as_seen_on_tv_reviews.pdfIn PDF document text
    • http://x-bionic.shop/gezekete6pqxq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378406/normal_6007b67e740b3.pdfIn PDF document text
    • https://cdn.sqhk.co/gedugari/13gjKha/lonerob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481663/normal_5fd6624e3032d.pdfIn PDF document text
    • https://cdn.sqhk.co/kejaxedusuk/TOaJigA/brawl_stars_characters_list.pdfIn PDF document text
    • https://cdn.sqhk.co/vujixete/iBhcZhe/banner_saga_2_chapter_13_stonesinger.pdfIn PDF document text
    • https://cdn.sqhk.co/rapovixovuti/hbijWAa/81907610825.pdfIn PDF document text
    • http://pogadai.xyz/logo_dls_2019_arema3yi65.pdfIn PDF document text
    • https://cdn.sqhk.co/faserekino/Rgjjajf/foruvisojurosovowilaz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484632/normal_5fff515adf305.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/tisegovofu/how_to_make_background_transparent_in_paint_windows_7.pdfIn PDF document text
    • https://a12a05ab-6462-4855-b086-b0a2a961d6d8.filesusr.com/ugd/2c76f4_ec08111bdf0446aa8b7b1e5444597338.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rorives/xatojediwodod.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/bandolins_oswaldo_montenegro.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/xawijipewumisuwaditivi.pdfIn PDF document text
    • https://143c7e3e-1a56-4739-9c24-5aac26b0263b.filesusr.com/ugd/28d7c1_b088a7bf001b4bc39cafb210af949e91.pdf?index=trueIn PDF document text
    • https://2d130471-2a64-48ba-87cf-8f1e86c6acad.filesusr.com/ugd/9c43ec_ca0356bd0c604a728bf517c57d77e630.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tubupejevomo/fezububofopobuxidab.pdfIn PDF document text
    • https://5548a280-a194-4776-8019-0e256783c1fa.filesusr.com/ugd/f2c1dc_091a39fc4bcf4b0c8826fe18ed6ebf17.pdf?index=trueIn 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_off00010714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10714 5308 bytes
SHA-256: bdac8b54eafb8be1d746376518f6e9ca8a9877cdf22fd94aeff9be710cdde00e
font_01_sfnt_off00011910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11910 11316 bytes
SHA-256: cf1d05f7c45c3dec2d4de41d7b3eca428c02ab7a2b7183125973cda898d6e406

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