Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d242fff5046c61e…

MALICIOUS

PDF

72.5 KB Created: 2021-01-23 15:11:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: dcb79f38ab7d993a49bcb599e69c1e3d SHA-1: d6885dca6201a8d599809407ca8676e347b650fe SHA-256: 4d242fff5046c61ec0566a4c1dfe373ca6f6bb8e3a00cd33dba1b78d7e94d96f
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to 'https://traffset.ru/aws?utm_term=ata+guidelines+2018', which is likely part of the lure. The document body, though heavily obfuscated, suggests a context related to 'Ata guidelines 2018', further supporting a phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffset.ru/aws?utm_term=ata+guidelines+2018 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4368955/normal_5ffb58cbcbdea.pdfIn PDF document text
    • https://cdn.sqhk.co/nemuvefik/yhfdgja/stickman_free_fall_game.pdfIn PDF document text
    • https://cdn.sqhk.co/jogepirar/cLehdcX/bloons_td_5_unblocked_games_76.pdfIn PDF document text
    • https://cdn.sqhk.co/rokabumake/jhifyxU/sakoxaguxoruwiwi.pdfIn PDF document text
    • https://site-1195763.mozfiles.com/files/1195763/adverb_meaning_in_tamil.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/makixibawumebol/18628773889.pdfIn PDF document text
    • http://nawonuzegajosi.epizy.com/77833186388.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/30746267910.pdfIn PDF document text
    • http://rujesuluxure.rf.gd/cookies_netflix_gratis_blogspot.pdfIn PDF document text
    • http://gawebunopom.rf.gd/batman_the_dark_knight_android_gameplay.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/3571818462.pdfIn PDF document text
    • http://gigigij.rf.gd/master_mason_catechism_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/assassin_s_creed_unity_dead_kings_soundtrack.pdfIn PDF document text
    • http://roxeruteruda.epizy.com/expedicion_botanica.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/wapumozozokexenax.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d19e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD19E 5176 bytes
SHA-256: 090a37b36202889a648221d9ee4bd19853fe8c06c4b1f46661bd824f2018ed34
font_01_sfnt_off0000e341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE341 10564 bytes
SHA-256: 3c01b456d5f94d1f9e4a743f6ca20a271d217f71d8e00dad431d962dc42995cf
font_02_sfnt_off00010748.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10748 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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