Malicious PDF — malware analysis report

Static analysis result for SHA-256 05e338229391b4d7…

MALICIOUS

PDF

78.5 KB Created: 2021-04-08 00:40:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: a894f78bbed390b0246ad265780cae00 SHA-1: 88b7b22e18a2aff6f25ffe820e646cd53a40ac61 SHA-256: 05e338229391b4d72f7f9f4494859e0e6c2d172d755d3eb7825a4e2a54a5d5ce
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, flagged as a 'PDF_SEO_LINK_FARM', with one prominent URL leading to a site that appears to be a lure for 'scion xb owners manual 2009'. ClamAV and an ML classifier also identified this PDF as malicious, specifically as a phishing trojan. The presence of embedded URLs and the overall structure suggest an attempt to direct users to malicious content, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/wix?keyword=scion+xb+owners+manual+2009 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373522/normal_60616a381adc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444115/normal_5fe9b85e7fef7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405650/normal_6046b50a16be9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482191/normal_5fc695fcc90f4.pdfIn PDF document text
    • http://kafidovomiguvo.mywebcommunity.org/athlean_x_fat_loss_program.pdfIn PDF document text
    • http://wogivodugakovek.mygamesonline.org/36308779953.pdfIn PDF document text
    • http://vizexibidoxi.getenjoyment.net/detailed_engineering_design_instrumentation.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/tokudapele/barriers_to_effective_listening.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/richmond_water_heater_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/takurugilij/ambili_malayalam_movie_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/nefunupu/56433675235.pdfIn PDF document text
    • https://cdfb6f36-dde2-4af5-b3b7-55ff39976061.filesusr.com/ugd/c6ac46_8ac8669dd62448628ec9bec81f6a4dbb.pdf?index=trueIn PDF document text
    • http://perexuwofogefo.onlinewebshop.net/78828821567.pdfIn PDF document text
    • https://5de9ed01-d610-4143-94db-6f998645a8ce.filesusr.com/ugd/1d8bf6_3c3e2a682e5a496c8ae36f64f5622323.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/027e7367-2f53-42d2-bfd8-a60be5f988c5/72704083216.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/cv_format_for_salesman_job.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/16568156779.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5393341-ebf3-488f-ab0c-32af0044f46d/vofigarofoku.pdfIn PDF document text
    • https://493f174a-a540-412c-bacb-e5b7b26cbfcf.filesusr.com/ugd/95bb70_bc882c63d861439385860dc9825e84fb.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFBA 5780 bytes
SHA-256: 9d1b1c3eb1d7fbabc49a8f1f01dffa6a68a6de1fcec04622856631a7f64a90ac
font_01_sfnt_off0000f35d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF35D 10496 bytes
SHA-256: 3a91e2297d416f34ec5d3b1fba94afb949d71c59421374a5914c577d2e6adcb6
font_02_sfnt_off0001176b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1176B 16060 bytes
SHA-256: 10572f3a10760712fbb8352e098d229fd21f48763f52fb6fd9385479015ceb58

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