Malicious PDF — malware analysis report

Static analysis result for SHA-256 6461cf9311b4f8fd…

MALICIOUS

PDF

71.6 KB Created: 2021-03-04 20:49:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a96bd6496816e7ba04551879c934d85e SHA-1: ed66088788f4ef400f8de4ae3d1251e2c5f801b2 SHA-256: 6461cf9311b4f8fd4427f872082931a6e6924cd9a7bc0d588f4ff2af5eec5d6c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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=avent+microwave+steriliser+nz+instructions PDF link annotation
    • https://cdn.sqhk.co/zarepowake/ggdZisK/five_below_toys_r_us.pdfIn PDF document text
    • https://zasevolonuto.weebly.com/uploads/1/3/5/3/135335071/dolum-fisapuboto-wilil.pdfIn PDF document text
    • https://cdn.sqhk.co/xumesapaxoku/iicaUic/vonebawopi.pdfIn PDF document text
    • http://jilet1.club/dairy_milk_kiss_me_full_song_downloadwfsod.pdfIn PDF document text
    • https://cdn.sqhk.co/kewusikata/JjaBjhn/11810786566.pdfIn PDF document text
    • https://zumimapokafo.weebly.com/uploads/1/3/4/4/134480523/9461151.pdfIn PDF document text
    • https://bigonokefexix.weebly.com/uploads/1/3/4/5/134518339/d3e08bcbd4aebd.pdfIn PDF document text
    • https://cdn.sqhk.co/lilovenodi/Fhajihm/hero_xpulse_200_price_in_nepal_2020.pdfIn PDF document text
    • http://reduslimitalia.website/adversary_crossword_clue_6_lettersygcpm.pdfIn PDF document text
    • https://gerutabelamulef.weebly.com/uploads/1/3/1/3/131384559/6767042.pdfIn PDF document text
    • https://pukizorot.weebly.com/uploads/1/3/1/3/131384201/7809095.pdfIn PDF document text
    • http://goldstein.berlin/betiyan_new_songjvx76.pdfIn PDF document text
    • http://floradoma.net/nevanelelatuza89pzx.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/joterige/99248442308.pdfIn PDF document text
    • https://504706c9-3a86-45eb-876a-6494ef133fff.filesusr.com/ugd/80c1db_61c53113d9d64868b316a8c5aca921f9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vebenok/present_future_tense_exercises_with_answers.pdfIn PDF document text
    • https://6afed14e-2b01-442b-8c2e-11a8a6f39965.filesusr.com/ugd/46a5ae_e2fe2a1950d64345a15fdd6377f79184.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dixaleko/67737275675.pdfIn PDF document text
    • https://411be8f8-4ba1-40b5-9edf-cc4a2c3d5ecc.filesusr.com/ugd/a86d68_6fbef0ca53da4b70ad6edb660d089a13.pdf?index=trueIn PDF document text
    • https://3bdad275-8828-414d-9063-9532e035d791.filesusr.com/ugd/c67d0c_0f0b28600f7b4afe8ca64bc3692d5805.pdf?index=trueIn PDF document text
    • https://1482387f-61d8-47e1-b538-9b7f1e8b89fb.filesusr.com/ugd/538d67_5c5f2cbf09214e89bf9b54ce32404622.pdf?index=trueIn PDF document text
    • https://0dea665b-aaaa-42f3-a52c-f86f0fd1efa2.filesusr.com/ugd/8b9728_e62f0bed010041fc911dffbdf4fc5f27.pdf?index=trueIn PDF document text
    • https://84d5b3ab-51dd-4312-87b7-51df18fb3b26.filesusr.com/ugd/9ea9b6_1088a630b6564798889b572031b6912d.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_off0000da60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA60 5136 bytes
SHA-256: 963fb579038ee20c2128ce74b3351fd2bee22ca494dfdc40bf2ce9d6c75d6d60
font_01_sfnt_off0000ebd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD8 10804 bytes
SHA-256: 3e32b83466ba70b9fd996b0ec20f272311f514d94c9268ef399acf21ab333436

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