Malicious PDF — malware analysis report

Static analysis result for SHA-256 45574ff451c51bdf…

MALICIOUS

PDF

76.6 KB Created: 2021-03-12 11:10:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 325e94df6a2be7d78afdc4ea2bb066d5 SHA-1: 8afe05ef3467260ea4ada950192f9770b1c8595d SHA-256: 45574ff451c51bdf1fc09a20ee2109a02a3420037a52960867bc5adceb098e20
154 Risk Score

Malware Insights

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

This PDF was flagged as malicious by multiple heuristics, including a critical alert for a malicious redirector link and an ML classifier. The embedded URL, https://yafferge.ru/award?keyword=basics+of+photography+pdf, is the primary indicator of malicious intent, likely leading to a phishing or malware distribution site. The file's structure and content suggest it is part of a phishing campaign, masquerading as a legitimate document to lure victims.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 4

  • 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.
  • 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://yafferge.ru/award?keyword=basics+of+photography+pdf In PDF document text
    • http://ramuwesitavoz.mywebcommunity.org/saturn_bose_soundtouch_300_remote_samsung_tv_code.pdfIn PDF document text
    • https://cdn.sqhk.co/kekotenonaxu/jgciboM/fenozaxedu.pdfIn PDF document text
    • http://alkim.xyz/mumovaralaze6hiht.pdfIn PDF document text
    • http://jaralet.getenjoyment.net/which_engine_works_on_otto_cycle.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411931/normal_600170bea0455.pdfIn PDF document text
    • http://silkhfig.bid/how_to_read_digital_scales_weightxi5ge.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418993/normal_602f3d9693eb5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458122/normal_601a062dc5ab2.pdfIn PDF document text
    • https://cdn.sqhk.co/lekabewoz/yieuhb3/gattu_aur_battu_game.pdfIn PDF document text
    • http://life50it.pro/rimidh3agk.pdfIn PDF document text
    • http://furniture21.online/2981833066iloag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470223/normal_600e7c6b55ebe.pdfIn PDF document text
    • http://zikewexer.scienceontheweb.net/baby_bjorn_potty_training_bundle.pdfIn PDF document text
    • https://cdn.sqhk.co/tebefaravuz/64Gijhf/61617312598.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403824/normal_600f21bb2e09e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375356/normal_5fc68760a346f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417658/normal_6008f6930b058.pdfIn PDF document text
    • https://cdn.sqhk.co/wajidafix/3ejH5ib/94659496475.pdfIn PDF document text
    • http://kzrovk.xyz/deutsch_wortschatz_und_grammatik_b1znlls.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450502/normal_60063a524833a.pdfIn PDF document text
    • https://cdn.sqhk.co/modajili/hbigehg/87493584473.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/tanikanaw/holland_america_cruise_history_report.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/57195752933.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/bofoxerak.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/international_phonetic_alphabet_translator_german.pdfIn PDF document text
    • https://s3.amazonaws.com/genijusemu/japasaviwide.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_off0000eed7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEED7 5536 bytes
SHA-256: c56947e5c058e0db9f530f0fd68f7fa492f53a465b3387bc4063c26041587cd6
font_01_sfnt_off000101b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101B2 10184 bytes
SHA-256: 97fd9c0009a0833dbdbebecfa0e881143f66a3aeaa41ea56987d59a47e704059

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