Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b0429acfa27f918…

MALICIOUS

PDF

81.3 KB Created: 2021-03-25 04:03:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 07d3da0f38783ecca98499c1246dbbba SHA-1: e7bd31f45e56eca6a6a7f5aa427b4ba7918ef095 SHA-256: 0b0429acfa27f918520b98147f1852219b52730e2f3ace86f2aa718da98670f1
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains a large number of embedded links, many of which are designed to lead users to external websites. One of the identified URLs, 'https://crophysi.ru/wix?keyword=offroad+outlaws+hack+2020', is flagged as a known malicious redirector. The document's structure and the presence of numerous links suggest an attempt to direct users to potentially malicious content or phishing sites, aligning with a spearphishing attachment attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=offroad+outlaws+hack+2020 In PDF document text
    • https://putesoborufo.weebly.com/uploads/1/3/0/8/130814126/puwutat-fajupab-bivaniduse.pdfIn PDF document text
    • http://hytri.com/lesiritevewamemunamakixacqqj.pdfIn PDF document text
    • http://frontglass.xyz/14131339315es2n7.pdfIn PDF document text
    • http://kigurumi.org/70605813729f9es5.pdfIn PDF document text
    • http://weinmvc.net/lijurezaxolavawevevuvijsjsgs.pdfIn PDF document text
    • http://supermagazforsale1.xyz/extraordinary_popular_delusions_and_the_madness_of_crowds_download9o64i.pdfIn PDF document text
    • http://7lessons.fun/vebukekogizaepe15.pdfIn PDF document text
    • http://igbusinessabouthelp.com/dodisorifesabebolebumejuv4dh5.pdfIn PDF document text
    • http://hd-cam-mirror-up1.club/balanced_scorecard_template_xlsf821k.pdfIn PDF document text
    • http://new-volosi.ru/hp_psc_1315_all_in_one_manual_espaol837zt.pdfIn PDF document text
    • http://expo-kit.ru/80446337376p4m1b.pdfIn PDF document text
    • https://lupunudarowujak.weebly.com/uploads/1/3/4/5/134599946/3def58c5.pdfIn PDF document text
    • https://piloseweme.weebly.com/uploads/1/3/4/4/134491853/9000802.pdfIn PDF document text
    • http://maewallace.com/jaxarosipufatinofonapigui8udh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://85377554-d84f-42a6-a955-c87f7d5d3d8c.filesusr.com/ugd/dd4472_45233f8d5baa4abdaf29e71ab033ee74.pdf?index=trueIn PDF document text
    • https://1d812fcc-cfc3-4558-a870-56fc5b7f4c2e.filesusr.com/ugd/754d94_5fdd609a034446ec9c9f9f27b28728ee.pdf?index=trueIn PDF document text
    • https://8035c368-62b5-4e0f-b07c-73fd2baf85c9.filesusr.com/ugd/2ee8d4_a9ab1d0c3eab4bd493e6a0b8a3b5dacb.pdf?index=trueIn PDF document text
    • https://959e49da-b405-4961-97d4-5c1bb2e9a628.filesusr.com/ugd/ab0441_5f2230ac65e447df990902fb2d8c6fd7.pdf?index=trueIn PDF document text
    • https://c2dbac7f-2075-4dc1-ad03-af0d0352bff2.filesusr.com/ugd/278743_28bc09ea00dc4c00bfd75d94f61b9b0f.pdf?index=trueIn PDF document text
    • https://15319a82-8c66-4906-b3c2-464277991f2b.filesusr.com/ugd/070acf_708ca134be81477fa1e7281efc894f29.pdf?index=trueIn PDF document text
    • https://45b0b119-5f8c-43e7-b437-4e12d17c1c81.filesusr.com/ugd/3826db_ad2f9f9004174f1b85da86b40360cbd3.pdf?index=trueIn PDF document text
    • https://0dd4521b-3e41-4083-9bcc-807cce03ae78.filesusr.com/ugd/cfe2e9_8bcf0487e2174d6a85e2b28412ca2945.pdf?index=trueIn PDF document text
    • https://7ae774ad-b64d-4473-a0b1-aa0db1e39e83.filesusr.com/ugd/3e7897_92946ffbcee2417aabb9f9a34df0171a.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_off0000f3b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B8 5568 bytes
SHA-256: 9721fef24c3531c2dd6ffb8497ea40cdde43454e66e55c0edb8884e0d25178bd
font_01_sfnt_off000106b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106B7 15152 bytes
SHA-256: 03f31c1b94927755cf71acebcd6c4beba017ba62998a703135a5343773e5982f

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