Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0a00e986310333d…

MALICIOUS

PDF

75.4 KB Created: 2021-04-23 17:25:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa9f6525aa60b53267c55914a2228f11 SHA-1: 7752fbb47de197e897a0566fd95945e35922c7ac SHA-256: f0a00e986310333d1708462301117080e99fcd1b1d5c3dc3e5a5f927f9c43255
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, many of which point to disposable hosting and are likely used for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to identifying trees, which is a common tactic for disguising malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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 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://pelibifir.ru/strik?utm_term=how+to+identify+a+tree+in+winter PDF link annotation
    • https://kurepisafigovu.weebly.com/uploads/1/3/1/3/131398088/3801540.pdfIn PDF document text
    • http://vebuwovivulab.mygamesonline.org/fegulemeveniworonu.pdfIn PDF document text
    • https://cdn.sqhk.co/pazaxefuma/b51ggX2/best_website_design_for_online_store.pdfIn PDF document text
    • https://cdn.sqhk.co/duponetix/iagcieU/34886069006.pdfIn PDF document text
    • http://sakulog.sportsontheweb.net/79611920119.pdfIn PDF document text
    • https://zabaruwizugode.weebly.com/uploads/1/3/4/5/134596412/38d0825.pdfIn PDF document text
    • http://xeniveperovabef.sportsontheweb.net/jenavejop.pdfIn PDF document text
    • https://mokowevabib.weebly.com/uploads/1/3/0/7/130739664/5571182.pdfIn PDF document text
    • http://butalinonoruma.scienceontheweb.net/11th_zoology_practical_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvazuginu/gSYgjP5/wawuwijodofavanedirij.pdfIn PDF document text
    • https://zixaxufomomofir.weebly.com/uploads/1/3/0/7/130738537/pukodepi.pdfIn PDF document text
    • https://javesuput.weebly.com/uploads/1/3/0/8/130873829/2012472.pdfIn PDF document text
    • https://cdn.sqhk.co/bitaxukezor/fjiWwDb/dopariwulexidonebepajajep.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a179b4bb-f9e1-4b0b-8685-f881d2afde68.filesusr.com/ugd/0fdb6d_1b3abf1141c04fed9224ee00be4bbdaf.pdf?index=trueIn PDF document text
    • http://buwumipulufi.epizy.com/version_android_samsung_galaxy_tab_10._1.pdfIn PDF document text
    • http://finuzajobozosom.epizy.com/76693631267.pdfIn PDF document text
    • https://96daf755-36ed-4ece-a185-bed8db3f70ea.filesusr.com/ugd/a95cda_088843a7769b4901ba0b05937cf79348.pdf?index=trueIn PDF document text
    • https://e4034479-4ead-418b-af8c-5be8dc72bdbe.filesusr.com/ugd/1e8759_21d800c5606d473a8a583c9b25bc1f00.pdf?index=trueIn PDF document text
    • https://02274cc9-8b57-4441-be19-e46c089ec46b.filesusr.com/ugd/f11b8f_bef049c98a7c4e558efd4a42108acb30.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/975f7532-6e23-425e-ade4-4abaa895501d/what_do_i_do_if_i_have_been_exposed_to_covid-19.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49dafb1b-edd9-4ec0-bf6f-ecb53ddf9e93/51845264769.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe9933ad-0b2f-458e-b935-01538d0f0cba/what_guys_want_to_hear_on_their_birthday.pdfIn PDF document text
    • http://zedameziwelo.rf.gd/abdominal_trauma_in_pregnancy.pdfIn PDF document text
    • http://gipomafusabakix.rf.gd/ancient_egyptian_religion_an_interpretation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f09afb6-8e17-4279-839f-b79fd9e14af0/65860681976.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df19e9c3-0375-440e-afc7-cc4c96a4190b/rademivokexubivuzosuzufaw.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_off0000ed2a.bin
12ddf5004b63d4ea6f172defbd5e003e3438e584bb5097247084f4daadc9f43e
pdf-font-stream PDF embedded font (sfnt) at offset 0xED2A 4848 bytes
font_01_sfnt_off0000fdc9.bin
075a3e968d46ee19393f957ef4f9e9820e764906b7d8eef990eb1e02ecf73383
pdf-font-stream PDF embedded font (sfnt) at offset 0xFDC9 9964 bytes