Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5c7f90a3f6ff797…

MALICIOUS

PDF

86.2 KB Created: 2021-03-23 20:48:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 7f0363ca5d580b75a02b6be15757c221 SHA-1: b9bb4bfddab05d6c39103f4de89ad60628ebc236 SHA-256: f5c7f90a3f6ff79701d0d01882fafd335256c69a44987031e305b2486c7d6e9d
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Abyat e bahoo' and mentions wkhtmltopdf, potentially indicating a crafted document for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • 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://jottigo.ru/123?utm_term=abyat+e+bahoo+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4425487/normal_6057e65fa16a6.pdfIn PDF document text
    • http://pemizirevubel.mywebcommunity.org/allosteric_enzyme_inhibition.pdfIn PDF document text
    • http://lagidonak.mygamesonline.org/assure_model_lesson_plan.pdfIn PDF document text
    • https://sojujigun.weebly.com/uploads/1/3/0/9/130969910/kapomolaliximoxul.pdfIn PDF document text
    • https://rinuvimasajef.weebly.com/uploads/1/3/2/6/132695862/b0190e63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405922/normal_60490e89d18cf.pdfIn PDF document text
    • http://mejumeroxara.mywebcommunity.org/nugisoginunozabezuker.pdfIn PDF document text
    • http://dikagowoxi.sportsontheweb.net/36978864497.pdfIn PDF document text
    • http://fevinoreniwelik.sportsontheweb.net/the_school_donald_barthelme_setting.pdfIn PDF document text
    • https://jogexolo.weebly.com/uploads/1/3/5/9/135957561/872d30ef72861b.pdfIn PDF document text
    • https://rasogumelix.weebly.com/uploads/1/3/5/4/135400304/vafonojevemidiw_murufiwive.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://144ece88-722e-4d59-a9d1-ae16887514c2.filesusr.com/ugd/48b17f_05326e3c46dc4dd9a2993983044cc311.pdf?index=trueIn PDF document text
    • http://lojiwifi.epizy.com/lisilimowolebiwemugun.pdfIn PDF document text
    • http://nijarigu.onlinewebshop.net/36443338926.pdfIn PDF document text
    • https://6b137298-3864-41c5-aaa3-11744000c3c2.filesusr.com/ugd/b916f4_da73839ae00f4f37babc09a26a785a6a.pdf?index=trueIn PDF document text
    • http://loxogosune.rf.gd/nuxatumigojarogerivoji.pdfIn PDF document text
    • http://nibizuladode.onlinewebshop.net/how_much_is_1_cad_in_rupees.pdfIn PDF document text
    • http://mujunuge.rf.gd/circular_motion_notes.pdfIn PDF document text
    • http://zeteximezoxa.myartsonline.com/polimumokupijifemolasamen.pdfIn PDF document text
    • http://ruronegiseko.atwebpages.com/annabac_maths_terminale_s.pdfIn PDF document text
    • https://0ea1ff7f-05b3-43a2-9744-178351a05ed1.filesusr.com/ugd/01f9b9_c2b62ce5921c4da4b563ee9da833e513.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_off000115a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115A9 5052 bytes
SHA-256: 88bcc10766bb266ee53b0b5dfd40bc291439e60d986e468b626c0ab97237d40a
font_01_sfnt_off000126e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126E3 10864 bytes
SHA-256: be89ce94bc10c6cc30e2a672af8985aae07843038d0915902f6f31d3a8c7ebd5

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