Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a455e45e9835051…

MALICIOUS

PDF

71.6 KB Created: 2021-02-10 07:48:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 03ead8796e95803b28603ccb14bcf8d3 SHA-1: e711887fed271eafa2dc7a232770013684213e08 SHA-256: 3a455e45e9835051496f1e2cd1ea3db0dd8fe45f772839cbe9555f56207081e9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file was flagged by multiple heuristics, including a critical alert for a malicious redirector link and a high-confidence ML classification. The embedded URL 'https://yafferge.ru/aws?utm_term=doraemon+song+telugu+free' is identified as a malicious redirector. This suggests the document's primary purpose is to lure the user into clicking the link, leading them to a site that likely hosts further malicious content or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/aws?utm_term=doraemon+song+telugu+free In PDF document text
    • https://static.s123-cdn-static.com/uploads/4446286/normal_6001be7919df9.pdfIn PDF document text
    • https://cdn.sqhk.co/wotirixa/Jyibhj3/66055631488.pdfIn PDF document text
    • http://ipoteka.net/terraria_sword_in_stoneqlx98.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412895/normal_6004a5e536b42.pdfIn PDF document text
    • http://detonic-romania.website/47193278607fvpm9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377909/normal_60048677bfcd2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455194/normal_601e0a5dc470f.pdfIn PDF document text
    • https://cdn.sqhk.co/nokulebepoba/jia7Dhh/fitbit_ionic_2_vs_charge_4.pdfIn PDF document text
    • http://richmaya.site/infinity_comic_bookmt987.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368487/normal_5ffa6a165e557.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475000/normal_6009dae9363a2.pdfIn PDF document text
    • https://cdn.sqhk.co/wiwuwigo/AgeheGh/best_live_sports_app_for_apple_tv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385198/normal_60176c5ac16e0.pdfIn PDF document text
    • https://cdn.sqhk.co/futevanu/eItihge/car_simulator_pc_online.pdfIn PDF document text
    • http://cashbackmoney.info/pujasajowro8is.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391903/normal_5fdc18a90a023.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458849/normal_6003d754e98c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407314/normal_601f41fbc921d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zaxuledo/nopenupuku.pdfIn PDF document text
    • https://s3.amazonaws.com/lonozote/29639382464.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c4b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4B4 2888 bytes
SHA-256: 26ba5c8d1583574648fd6e595d23dee3122ef52e1b97b4330dab96c4d4c4123d
font_01_sfnt_off0000cef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEF7 4920 bytes
SHA-256: cb290b22e9470cba8a824d19a774dbf4a90eed2945055976817eaf7d2b83094e
font_02_sfnt_off0000df9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9C 10204 bytes
SHA-256: 40d0cb85180a1a74379acc3f233e268eba5b8cf9c5af50acec517ba8810b5317
font_03_sfnt_off0001029e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1029E 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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