Malicious PDF — malware analysis report

Static analysis result for SHA-256 f45333aa151ea972…

MALICIOUS

PDF

145.4 KB Created: 2021-03-07 08:55:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 0197d0a482bbedf406061c852d9f2357 SHA-1: 01929be6561d3795c7fc26a4f937a7b99ac9c1ed SHA-256: f45333aa151ea9722f50291aabcb825f1980fe122ff0756accb60f99d3046583
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic firing for a 'PDF_SEO_LINK_FARM'. The primary URL, 'https://soxebez.ru/wix?keyword=...', suggests a phishing or malicious content lure. ClamAV also detected this as 'Pdf.Phishing.Trojan'. The embedded nature of these links indicates an attempt to redirect the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 5

  • 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.
  • 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://soxebez.ru/wix?keyword=%25D8%25AF%25D8%25A7%25D9%2586%25D9%2584%25D9%2588%25D8%25AF+%25D8%25B3%25D8%25A7%25DB%258C%25D9%2581%25D9%2588%25D9%2586+3+%25D8%25A8%25D8%25B1%25D8%25A7%25DB%258C+%25D8%25A7%25D9%2586%25D8%25AF%25D8%25B1%25D9%2588%25DB%258C%25D8%25AF+%25D9%2584%25DB%258C%25D9%2586%25DA%25A9+%25D9%2585%25D8%25B3%25D8%25AA%25D9%2582%25DB%258C%25D9%2585 PDF link annotation
    • http://nuloriwilorij.scienceontheweb.net/purisomedolepopatu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484994/normal_5fcbd53bc93dd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446643/normal_5fca2c8eecd83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408333/normal_6019730a6f3a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489245/normal_60183d5d94443.pdfIn PDF document text
    • http://nigavereke.mygamesonline.org/81458474308.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371536/normal_5ff2f4033198d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484610/normal_5fe2790ad3444.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427091/normal_60157efc673e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365628/normal_5ff4cc32da287.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410006/normal_6012daebb35ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365657/normal_5ffc384cd7805.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://9eb5ee95-128e-4115-bcd6-d8db8525ce49.filesusr.com/ugd/9904c2_ce14c7357d37422dabcc4ee68eaed5cb.pdf?index=trueIn PDF document text
    • https://d4996ccb-aecf-47c4-aab6-3c4fe022e1b7.filesusr.com/ugd/b7ed05_bb9d062b5ef3426590a5c0aa0354a106.pdf?index=trueIn PDF document text
    • https://627f215e-41ba-4aa4-9906-5f9f9d117739.filesusr.com/ugd/8ab72e_5d982d77a5844b41921279dbdcb72746.pdf?index=trueIn PDF document text
    • https://7ed754b6-a209-4558-9281-0032c7ee8ade.filesusr.com/ugd/4329d7_e52b1b7c5c2e4addaaa0f3bd6207e018.pdf?index=trueIn PDF document text
    • http://refusunono.onlinewebshop.net/what_is_the_quran_vs_the_bible.pdfIn PDF document text
    • https://01477de9-116b-42a6-a62c-54244336611e.filesusr.com/ugd/dea9e9_809b675375184b1ab42a88911e67abd1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/84241026822.pdfIn PDF document text
    • http://tavoxelelenasi.onlinewebshop.net/guvajobonulara.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/57109686735.pdfIn PDF document text
    • https://61090d85-22e6-4724-b969-52a17785150c.filesusr.com/ugd/952c2e_487fe2eba3544f11aa2a66480008302c.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0001fb2d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1FB2D 32120 bytes
SHA-256: 7c3af209ec55ed74b1e865b799d8d8bf51857349387aa4aa10f9d4a482e4f139
font_00_sfnt_off00018c86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18C86 2984 bytes
SHA-256: 218615c96ca80467247facc766f9c2f2584948c92711c8aede41886f3cdaaaab
font_01_sfnt_off00019735.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19735 4232 bytes
SHA-256: d80376c0c46c7cc1e901da99232e91e0b417ed28e8cc2dc0917aee3fcb6a5587
font_02_sfnt_off0001a5a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A5A6 6640 bytes
SHA-256: eca62b72654736461a635ba366d09d794777fd95c58152d2b251becdfce657e0
font_03_sfnt_off0001b743.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B743 11280 bytes
SHA-256: 2b9a88325dc2b82adb18fb70a08801ed2148b7d1f60695b483c370d0832a7b73
font_04_sfnt_off0001dd8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DD8E 18936 bytes
SHA-256: 1cc4bf5238f73eeef20cffa5efc7067145ca21eb77340a2c3875a3557fede682

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