Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1871e21f843c420…

MALICIOUS

PDF

80.9 KB Created: 2021-03-06 01:33:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: db86053c94f4ffb3d12649c05613283d SHA-1: 92adfcceb39f7911575ea99a69013169f89c32e5 SHA-256: e1871e21f843c4203860e371d61f7380dec22cb6f61a8f60b7ce3f9da45b1ecb
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, suggesting a link farm or phishing attempt. The primary URL, 'https://xezojetit.ru/award?keyword=model+3+vs+model+y+cargo+space', is likely used to direct users to malicious content or further phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • 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.
  • 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://xezojetit.ru/award?keyword=model+3+vs+model+y+cargo+space
    • http://prizinsta365.website/48106483249poryb.pdf
    • http://themarkuzmusic.com/jejubupomufz38a3.pdf
    • https://bemebedutor.weebly.com/uploads/1/3/4/6/134624352/zafafowo-tireno-nufafatixe.pdf
    • http://axecheat8.xyz/45852801675dz7o1.pdf
    • https://mitivowa.weebly.com/uploads/1/3/1/6/131607237/883458acb768e.pdf
    • http://fastpeysistem.online/dream_of_teeth_falling_out_rotten7hcjh.pdf
    • https://takewinedol.weebly.com/uploads/1/3/4/7/134768260/felakaxuvi.pdf
    • http://dontbeshy.xyz/xopugotonowapiwe38dj8.pdf
    • https://topigofifudonif.weebly.com/uploads/1/3/5/3/135304546/vakorika-jenawejafog-molojemolez.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://01d7ec8a-e38e-4e33-8c76-1be31754498b.filesusr.com/ugd/24d943_a0247840e65a4d8984f76946947366d5.pdf?index=true
    • https://uploads.strikinglycdn.com/files/da87180b-255d-471e-8375-1b6c84392310/87108903942.pdf
    • https://18aefb47-0221-41c7-ace0-4f78eb33e730.filesusr.com/ugd/bca722_a9ddf8594be7432199a68fe4e569f50d.pdf?index=true
    • https://4900ecec-7ac1-411c-be2c-b077674085c8.filesusr.com/ugd/493135_1e415c33baa2448685e05b071503f12c.pdf?index=true
    • https://a2ae8793-a99f-480d-a3bc-849ef63d34f7.filesusr.com/ugd/cc207a_7fcbfe4b2635479e9fe0c0b142b7177f.pdf?index=true
    • https://0b7b936c-93ac-4a60-9644-6ba220b934cc.filesusr.com/ugd/b4bf80_c9f365c89b1e4e9fb2b27338a6533540.pdf?index=true
    • https://e028ba52-6c86-493e-86b7-fecf7cd1c3eb.filesusr.com/ugd/bcb9fd_07134a6b7f2a4556ad0fff400eb0d031.pdf?index=true
    • https://uploads.strikinglycdn.com/files/22d37fe1-5f0d-45c7-a513-7a285de3b19f/cynthia_slam_poetry_lyrics.pdf
    • https://uploads.strikinglycdn.com/files/85cdb348-995d-4bb0-a16f-bbf8360419b4/92118931068.pdf
    • https://46c19374-600d-43be-a5f2-d8bf07c6fddf.filesusr.com/ugd/cc94a4_c8d34c1333ff49bb941f747710a3999b.pdf?index=true
    • https://uploads.strikinglycdn.com/files/758177a7-a1d9-4139-a9b1-925da1d8b71a/duwojuxogijuli.pdf
    • https://d4bcd744-2348-4fe3-9006-05b2fcbd3cbd.filesusr.com/ugd/704566_7bac57c760ac43d39e7f831571aa75eb.pdf?index=true
    • https://uploads.strikinglycdn.com/files/f88ae48b-b37b-4562-92a4-5c69c63a83df/71030956449.pdf
    • https://21e323bd-7fdd-46e9-a6c7-4880e76d7610.filesusr.com/ugd/0a51c1_0ac24a7baeea40729b2330e6d32ab795.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fec1.bin
40d763b8030415df683f1fddc1a1f18275d2c0e4f9a0d261671bb68824bf61ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEC1 5724 bytes
font_01_sfnt_off0001124c.bin
be35d0287a55bcc5c5815e599adb0047a9d3af596509f62d8c1c4347d5f8bf45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1124C 10564 bytes

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