Malicious PDF — malware analysis report

Static analysis result for SHA-256 edb1cc18a2b01c4d…

MALICIOUS

PDF

91.7 KB Created: 2021-03-20 02:22:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c11751be8d20e96894836abd2ead2bb9 SHA-1: 112e512a3cae850b392ad5dbbc9d2cdb1c451afc SHA-256: edb1cc18a2b01c4d67807f5bcb954889e7fd23a3d95b8ca39405be72f23dd82c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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 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.
  • 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://nipisod.ru/award?keyword=bharata+rajyangam+pdf+download PDF link annotation
    • https://cdn.sqhk.co/retagigimusa/dhjig46/best_app_to_translate_english_to_chinese.pdfIn PDF document text
    • https://cdn.sqhk.co/nozesinipi/bFUhgha/4991488802.pdfIn PDF document text
    • http://idealica-itufficiale.website/learn_how_to_use_epic_softwareejohb.pdfIn PDF document text
    • http://findattime.com/84012563595s8gby.pdfIn PDF document text
    • https://cdn.sqhk.co/kagofiwavum/hjjzjiJ/7758973374.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473445/normal_6007cd68df1ac.pdfIn PDF document text
    • https://cdn.sqhk.co/dagozuwemep/hh7hije/stylish_sisters_fashion_game_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480162/normal_5feb67abebf4d.pdfIn PDF document text
    • https://cdn.sqhk.co/bulenupulabo/jeQgdja/23992280432.pdfIn PDF document text
    • http://kavelizopepi.mywebcommunity.org/79936447806.pdfIn PDF document text
    • http://dazolovegom.mygamesonline.org/moto_e_2nd_generation_support_4g.pdfIn PDF document text
    • http://jsexj.fun/xosans65ug.pdfIn PDF document text
    • http://medway24.com/slope_intercept_form_worksheet_easyqilrr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367912/normal_5fcf945672279.pdfIn PDF document text
    • http://formverifiedbadge.com/promodj_top_100_djibg2h.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/puzifetotalalebo.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/lavibobejesa.pdfIn PDF document text
    • https://6478d21b-237c-41b5-add8-96d7b9819624.filesusr.com/ugd/c7ef1a_1f9d457737634fd2a02f5a21f5cac514.pdf?index=trueIn PDF document text
    • http://niwimugosaz.onlinewebshop.net/lijikexilesudalimaj.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/43461252025.pdfIn PDF document text
    • https://0c2a7d7b-be9d-4ef2-a94c-09ca905cc17d.filesusr.com/ugd/7d21c0_2e360140bda04be5b232a855bcb2bfba.pdf?index=trueIn PDF document text
    • http://zevusup.atwebpages.com/896575565.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/87312529892.pdfIn PDF document text
    • https://711920be-b761-4f0e-a604-762b26663b16.filesusr.com/ugd/ffcbea_16bffc6bf24a49f688d92df6c6ed2440.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rimepusox/71936147406.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e546.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE546 5596 bytes
SHA-256: d0e546afaa6c4d13f501d7c6aee756eb8cd2be77069d3454e159bd715571f747
font_01_sfnt_off0000f845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF845 31188 bytes
SHA-256: bae5aaf1bc0e6cb1ca52e022dcbad769c6bfccadebc0de6f358e893b3318cf31
font_02_sfnt_off000138d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138D9 10780 bytes
SHA-256: 848c8c4a87c6d662f3b24eb559203ac68ce1ae6b92c5401b05df07ae1101b55e

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