Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d766f2a4194c11d…

MALICIOUS

PDF

81.7 KB Created: 2021-04-01 13:57:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f072f7ce783b64d9b88a4fd69a43eb15 SHA-1: 83fa64c70e82ffa232d4f92d97b20e14ecaeb506 SHA-256: 1d766f2a4194c11dd320c14290d84b9a3886f1f92f6b31f653fd2b2dd3b0b086
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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/aws?utm_term=how+to+replace+watch+wristband PDF link annotation
    • http://tacfitproducts.com/75589212520pz0mg.pdfIn PDF document text
    • https://cdn.sqhk.co/feledigowud/gdiguic/zugebun.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvebopeweb/hROhjic/53331946334.pdfIn PDF document text
    • https://cdn.sqhk.co/zofukumane/ifibjdS/sejobafonolumekibexu.pdfIn PDF document text
    • http://nukels.xyz/7792315346856dhy.pdfIn PDF document text
    • http://fonujameritules.getenjoyment.net/64966700598.pdfIn PDF document text
    • http://shopbest.online/petsafe_2_meal_feeder_troubleshootingg5fgg.pdfIn PDF document text
    • http://odebayitrafikhizmeti.com/79232888131u9bc1.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/wifiduxezo/if_life_was_perfect_it_wouldnt_be.pdfIn PDF document text
    • https://4f65501f-cdae-4966-b9db-49b15ad9d196.filesusr.com/ugd/52b593_07c1a59dd3004098883c54f1c400521c.pdf?index=trueIn PDF document text
    • https://0978d23c-7b87-408a-b4ab-ff16da0dae51.filesusr.com/ugd/369d68_313841a74b7141b493eb10941d17c713.pdf?index=trueIn PDF document text
    • https://441768bb-9839-4df4-8f78-dd1233b527f6.filesusr.com/ugd/7e6080_52ae06f379c74d1a8f96f70ae3f7ac96.pdf?index=trueIn PDF document text
    • https://aa4c2489-c93b-4667-afab-104bf5323bad.filesusr.com/ugd/8b49c6_2c030ea1b40145f5932386dc2bfd525e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lebaxa/fisher_grandma_bear_wood_stove_baffle.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/vsco_cam_latest_version_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66866c72-dcd8-4264-a00d-5eca6fb82541/how_to_pair_tws_wireless_earphones.pdfIn PDF document text
    • https://d5bea983-5bca-41ba-aae6-6b688785cc77.filesusr.com/ugd/9ec29b_5769dda051454e8aae3935c230e48617.pdf?index=trueIn PDF document text
    • http://nosawakudik.myartsonline.com/sevalezupud.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/anthelmintic_drugs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0013a022-fef2-4b24-a2d1-4413af295a3e/59474023021.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/220111ac-b82b-46bd-b91f-e821bdbb9aa1/old_school_house_music_2000_tracklist.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/88163061410.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4536535-f146-48fc-80cf-2dd52d56fead/how_to_change_picture_from_opening_in_paint.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_off0000f3ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3BA 5144 bytes
SHA-256: aa48545f5fe8dfdac021f1726f538491bb97d40ac319c22277f0d9794a5d5c18
font_01_sfnt_off00010523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10523 11060 bytes
SHA-256: d193db4cbadee77fdf31eb5c1406441c1efd39ada7028a9b6dba08173e65fd75
font_02_sfnt_off00012ac3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AC3 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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