Malicious PDF — malware analysis report

Static analysis result for SHA-256 87def80839974cba…

MALICIOUS

PDF

84.8 KB Created: 2021-03-16 18:39:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5fd4c0f808e26f16826c6f32666e5ae SHA-1: d51d6aabe50b1a1ca722563744857facde54eeee SHA-256: 87def80839974cbabbd1ca41fb94edaf089557f985cac1da4401d543ea243d96
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm designed to redirect users to malicious websites. The ML_NYX_PDF_MALICIOUS and ClamAV detections confirm its malicious nature. The embedded URLs are likely used to host phishing content or distribute further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://resalured.ru/123?utm_term=accelerate+learning+answer+key+6th+grade
    • https://pasezarovatif.weebly.com/uploads/1/3/4/8/134858127/6310789.pdf
    • https://gofolepoxi.weebly.com/uploads/1/3/4/8/134882907/zixobowekuvelet_noxuwufikemetuf.pdf
    • https://nuxelimifa.weebly.com/uploads/1/3/0/7/130776070/9642023.pdf
    • https://cdn-cms.f-static.net/uploads/4413707/normal_604f564755dc2.pdf
    • https://cdn-cms.f-static.net/uploads/4377663/normal_600d45cfd4ea9.pdf
    • http://manovina.mypressonline.com/the_maze_runner_full_movie_in_hindi_download_480p_filmyzilla.pdf
    • https://zezazerin.weebly.com/uploads/1/3/1/8/131856191/0cb71d49e22da5.pdf
    • https://static.s123-cdn-static.com/uploads/4446776/normal_60057aabdac2c.pdf
    • https://xitipirobopu.weebly.com/uploads/1/3/0/8/130813988/8c01016.pdf
    • https://cdn.sqhk.co/givifevulo/jjhjUtu/lesson_plan_templates_for_online_learning.pdf
    • https://cdn.sqhk.co/fujavuraleko/faibEjf/crowded_house_furniture_company.pdf
    • http://zofunubesosena.mypressonline.com/37661844423.pdf
    • https://titapogesasoja.weebly.com/uploads/1/3/1/3/131380181/tufeju.pdf
    • https://foroziroxodom.weebly.com/uploads/1/3/4/6/134647192/90755ff0f3b6e.pdf
    • http://yewes.space/85151907365tueit.pdf
    • http://gubixazolela.sportsontheweb.net/mirave.pdf
    • http://monongzhlh.space/the_conductivity_of_m_10_kcl_solution_at_2041or3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000100bf.bin
01ec472800b53cbc33a49c84423a00116c3fd7fbe70550838c0a4675339245ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100BF 5280 bytes
font_01_sfnt_off000112ad.bin
61353c548bd4f868f4833c3923ebb02e3807d504c754d916f2c29a2d8448dca1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112AD 10896 bytes
font_02_sfnt_off0001380a.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1380A 4324 bytes

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