Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ea3c20b902c021b…

MALICIOUS

PDF

93.0 KB Created: 2021-02-28 16:12:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: bfe6ca1c5bcd69d5c586ee941eeeca7e SHA-1: b04d29885428436ace33eb2668ca2f3774144083 SHA-256: 6ea3c20b902c021b73616fc5444e5b6b27d2bc22522307b1045a63d627c905d9
96 Risk Score

Malware Insights

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

The file was identified as malicious by a ML classifier and ClamAV, indicating a phishing or trojan threat. An embedded URI points to a URL that appears to be a lure for downloading MP3 songs, suggesting a social engineering tactic. No scripts were extracted, but the PDF structure and embedded URI are strong indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • 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://bologen.ru/123?utm_term=aage+band+baja+mp3+song+download PDF link annotation
    • http://zeboxagekej.sportsontheweb.net/why_is_my_pellet_stove_not_staying_lit.pdfIn PDF document text
    • http://kuzojud.66ghz.com/13206366971.pdfIn PDF document text
    • http://gumugupibope.iblogger.org/72803555046.pdfIn PDF document text
    • https://cdn.sqhk.co/sewujuzanas/bhcunie/uber_hamburgo_mexico_telefono.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://posugez.epizy.com/kijuniwoxiw.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/pronouns_and_antecedents_worksheets_grade_7.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/simple_invoice_template_html.pdfIn PDF document text
    • http://pujumek.myartsonline.com/47866031771.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/tivaruduwubuwuzuwakixivu.pdfIn PDF document text
    • http://duxegejuw.atwebpages.com/marlin_model_81-dl-22_cal-s-l-lr_for_sale.pdfIn PDF document text
    • http://satawakerexe.atwebpages.com/the_way_of_the_world_themes.pdfIn PDF document text
    • http://kimoviranonaf.onlinewebshop.net/american_girl_doll_houses_at_walmart.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/vimanam_film_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/34645095758.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/ratio_fraction_simplest_form_calculator.pdfIn PDF document text
    • http://mibarup.epizy.com/16946309161.pdfIn PDF document text
    • http://jumepenitujox.atwebpages.com/fikadozevixonaxeluwopuxer.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/kadamban_movie_audio_song_free.pdfIn PDF document text
    • http://sobumewupuvuve.epizy.com/86182143436.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0001394f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1394F 23848 bytes
SHA-256: 8058ea883c287a92f4d4acacbb421141c2c2e5297096b14fc906c6095c86d290
font_00_sfnt_off0000e00a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE00A 6584 bytes
SHA-256: 66fc40b70f1b29d4e57e74600291eefb5263259ae0ada211bcaa025173b32eb5
font_01_sfnt_off0000f063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF063 5644 bytes
SHA-256: a3393a3c1aef0260a0bd9a12545d3edd9276c42961bf2bbcd3e6912ff2e1d29d
font_02_sfnt_off0001038a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1038A 4452 bytes
SHA-256: 50ad8a8795b0c77dfd3952265d7c7bff5a3b8cba501eec25b9671bfea16b6a2d
font_03_sfnt_off00011363.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11363 11040 bytes
SHA-256: f6319003f77ac7752c500af065634d3643f685f0b09c6da01ab4f02d9a378da2

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