Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e0af6ecf74016cf…

MALICIOUS

PDF

78.6 KB Created: 2021-03-09 18:11:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 6fe047408657f3a893b315909f8e9359 SHA-1: 38db102f8bc9c8b5b2e323dbe0a8e24c5cc5d144 SHA-256: 4e0af6ecf74016cf54afc626cffff3a4da2fc8a14c266ee84bb2743d8c1be824
126 Risk Score

Malware Insights

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

The PDF file, disguised as a manual, contains multiple embedded URIs pointing to potentially malicious domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of external URIs suggests an attempt to redirect the user to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://fokemale.ru/wix?keyword=true+test+meter+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4472206/normal_60335c5c6a17e.pdfIn PDF document text
    • https://mutikotamibe.weebly.com/uploads/1/3/0/8/130874320/biwof-rawisa-zusemijugavumif.pdfIn PDF document text
    • http://mewudaguzexo.sportsontheweb.net/tevoganux.pdfIn PDF document text
    • http://d-youtube.com/80501169025hg4jp.pdfIn PDF document text
    • https://woziwunamewig.weebly.com/uploads/1/3/1/6/131606321/b576605fad54b.pdfIn PDF document text
    • http://blankid.ru/surah_mulk_full_text9zumk.pdfIn PDF document text
    • http://instahelpforbusiness.com/29571529889q6cl2.pdfIn PDF document text
    • http://jebebixazonutug.mypressonline.com/epson_xp_800_changing_ink_cartridges.pdfIn PDF document text
    • http://blancop.xyz/chitrkar_information_in_marathim6df8.pdfIn PDF document text
    • http://ruwufuwetoj.mygamesonline.org/how_to_add_formula_in_openoffice_writer.pdfIn PDF document text
    • http://alania365.ru/buxozifuvigoslyq8t.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414169/normal_603ad19250f57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465538/normal_5fe91d4800288.pdfIn PDF document text
    • https://kunubukom.weebly.com/uploads/1/3/4/5/134599245/degalolu-putokegagebu.pdfIn PDF document text
    • http://mekomob.getenjoyment.net/samsung_scx-3405fw_driver_windows_8.1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479679/normal_60476d93b1767.pdfIn PDF document text
    • http://sagedix.medianewsonline.com/35451955971.pdfIn PDF document text
    • https://jenajurowob.weebly.com/uploads/1/3/1/4/131408252/68ec9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375080/normal_600ffb3a62a6d.pdfIn PDF document text
    • http://fidofawi.medianewsonline.com/girl_scout_yells_and_cheers_english_lyrics.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tipujujidudig.rf.gd/fios_replace_remote_battery.pdfIn PDF document text
    • http://xarezebabanadot.epizy.com/how_to_update_address_on_drivers_license.pdfIn PDF document text
    • http://nununad.myartsonline.com/55851987492.pdfIn PDF document text
    • http://dozuxix.myartsonline.com/management_and_organisational_behaviour_free_download.pdfIn PDF document text
    • http://weparaxopulo.atwebpages.com/fagejetoposavotijig.pdfIn PDF document text
    • http://xadugatu.epizy.com/96410530897.pdfIn PDF document text
    • http://lonalubegefi.rf.gd/what_does_progressive_education_mean.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_off0000f8f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F9 4780 bytes
SHA-256: 6948663e3a1c56b581870cc6872669b53ad8fb4eb29734984b7961d4ea1c52b9
font_01_sfnt_off00010918.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10918 10504 bytes
SHA-256: 054d2f2e3f2cc0fa1fbaa5f2c9117bfc81af6ca94e556e0d936c2a8aadd98382

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