Malicious PDF — malware analysis report

Static analysis result for SHA-256 15e89fd24d199f1e…

MALICIOUS

PDF

143.2 KB Created: 2021-04-06 09:54:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 2ce798e85638b0e80fc782ed9e0e5a60 SHA-1: a99a04e8ba601d74584c21bf29eaab4c26d344ea SHA-256: 15e89fd24d199f1e5ea664601a99c4258b3016dfc87287a0a791ec5191ad5bcc
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. The PDF contains a large number of external links, suggesting a link farm or phishing attempt. The primary malicious URL identified is https://xezojetit.ru/123?utm_term=chevy+cruze+diesel+manual+shift.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://xezojetit.ru/123?utm_term=chevy+cruze+diesel+manual+shift PDF link annotation
    • https://fuwofinirofen.weebly.com/uploads/1/3/1/6/131637723/sobireki.pdfIn PDF document text
    • https://fusupolupiritox.weebly.com/uploads/1/3/4/3/134374508/vagul.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502870/normal_5fc8fcf076379.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454435/normal_5fdd89d2b0e0d.pdfIn PDF document text
    • https://nilemesobipefuj.weebly.com/uploads/1/3/2/3/132303022/wesisizutena.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473039/normal_6005ba8497550.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390638/normal_606aca4aa1a45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465128/normal_6037631901bc3.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://151dec52-cf20-477b-a401-a68195eead79.filesusr.com/ugd/8538f4_d71c16d703174e76b1b6e9e2e6476e77.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/gawufizekusobowululazo.pdfIn PDF document text
    • https://0df6220b-9630-4647-aab6-0d9db69b9d59.filesusr.com/ugd/8b97dd_327fc5513f1c49c48b7b8c8857924ebf.pdf?index=trueIn PDF document text
    • https://521a9f5b-5c7e-4f25-a9e4-5446fb1b1975.filesusr.com/ugd/c1a494_4a382e2ca8b040d1817c2242757bb937.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/79202655981.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/michigan_mandatory_reporting_elder_abuse.pdfIn PDF document text
    • https://f62823ea-e863-4eb7-bd7c-e3bac0139ff1.filesusr.com/ugd/8c639a_ddc02bfe9d74426aa168b2bf83df1ac7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/2245591854.pdfIn PDF document text
    • https://76df98a8-3e94-4eee-a6f5-23e1de06049b.filesusr.com/ugd/54c74c_f48f6d3d2f50409ab22ec7776141f0b6.pdf?index=trueIn PDF document text
    • https://a4758657-6aaa-4003-b0f6-1957e800abfd.filesusr.com/ugd/70c1f8_b9365ae64dfd457698514baf73acbcb3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/84900946584.pdfIn PDF document text
    • https://5fb42ee6-a9be-400a-98f2-f9d4b9f720c8.filesusr.com/ugd/1813b3_39904c514bdc4b30a00bebcb7e525eb5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lunojol/aroon_up_and_down_indicator_mt4.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/5515589357.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0001d1fe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1D1FE 11016 bytes
SHA-256: fe0251d9b2705e5309d0852447c182a90415e3af9b404dbbf8d316330960239f
font_00_sfnt_off0001bfd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BFD9 5376 bytes
SHA-256: 3b1e51f4c742fa41b2c9bc1e09383a81b9f64e371130ed5217b6454956f4b3ce
font_02_sfnt_off0001f0d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F0D4 12324 bytes
SHA-256: b1c64c1fa7d23576150afd052609d9e84b1bba69ac14c72e849f720f9c31d3f3
font_03_sfnt_off000219a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x219A4 16060 bytes
SHA-256: 2d958bd008b8db5b33092f112e99c856adbcc0a100e950d14ff814b784be6357