Malicious PDF — malware analysis report

Static analysis result for SHA-256 c953577472e69563…

MALICIOUS

PDF

75.7 KB Created: 2021-03-09 05:44:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ad01d9a5d440277f70fe0091ebc9fe43 SHA-1: 94d19a890d10aa1487717c45490625f025b55a48 SHA-256: c953577472e69563224d7a9a65fdf93c3aecfc91eb1974f0ec49e5939a92e86d
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/award?keyword=alumni+association+registration+form+pdf PDF link annotation
    • https://momewevegugeb.weebly.com/uploads/1/3/5/3/135326076/2584656.pdfIn PDF document text
    • https://riwozetamozu.weebly.com/uploads/1/3/4/3/134331456/lilefiwidilim_dovusefil_gowikedonulunot_wowijozoxu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443602/normal_5fdaad3968584.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411915/normal_5ff0defb9aa55.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420019/normal_5fe5fb315b0f2.pdfIn PDF document text
    • https://jegivobepumo.weebly.com/uploads/1/3/4/4/134444156/bezawafovef_vunijiminusan_kuvefokesamufuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374518/normal_6046240f4112e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://24d1f61b-f5c5-4d2f-8180-62589f44e8d8.filesusr.com/ugd/eed56f_faea0622ef2b4008862d36f01549c717.pdf?index=trueIn PDF document text
    • https://4c72699b-aa2e-4dc8-8bd5-1a54e8f938a6.filesusr.com/ugd/f3cb45_394ca2130963456bbebe0baddb5a0d1c.pdf?index=trueIn PDF document text
    • https://ec2d952e-5494-46d8-b841-fee222248b17.filesusr.com/ugd/9713d5_5cdf9dfc15514ee0954ec9ee554f9f49.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/zetixi.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/95836857034.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/31440005121.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/talefodekowijenakedop.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/objections_in_court_cheat_sheet_canada.pdfIn PDF document text
    • https://b6086c54-8ef4-40f3-ba18-bbbb993b339e.filesusr.com/ugd/36e927_bbdd0ac5c6c9421d946d9787c1a6bc69.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/polojuliragam/43886980379.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/dunadotudavinuwefiv.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/85769892452.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/matiwavetelonujevaze.pdfIn PDF document text
    • https://7fe1f042-206b-4735-a408-f56337efeeb4.filesusr.com/ugd/d34b51_8b154b707da249b493a2d15d37586ff0.pdf?index=trueIn PDF document text
    • https://e31b828f-dd5d-4b35-abba-5777d5fc2ed6.filesusr.com/ugd/56a8cc_334c8bd69e7a4adca8fc4d58b72164ba.pdf?index=trueIn PDF document text
    • https://f039f7e9-c7fa-441d-bf3d-2f0e35d6be10.filesusr.com/ugd/80685d_2d94f2488b154f12be3685d307d3b72f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/divagex.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eca5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA5 5464 bytes
SHA-256: 73795865704d62d0afd1ef5e88500b2d3aa3e4273cb33c944486a810c9902bc8
font_01_sfnt_off0000ff22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF22 10040 bytes
SHA-256: 874a458d4a1f948e268edc81f701c35da1f5da27395a75fd7669bb356e6fd2df

Open this report in the interactive analyzer, or submit your own file for analysis.