Malicious PDF — malware analysis report

Static analysis result for SHA-256 91376e4e34c0a324…

MALICIOUS

PDF

78.5 KB Created: 2021-03-22 11:48:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad3c4b0d9f60358333d1905a05e0c49b SHA-1: 68574cffcae30415e2adb56c6b308163fe8a0be1 SHA-256: 91376e4e34c0a32483601fe93856a5de3c1011e0b8b03cd7f672e8ddf1da1f24
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into visiting a malicious site. The document body, though heavily obfuscated, suggests a lure related to search results or specific content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://druttle.ru/wix?keyword=litcharts+their+eyes+were+watching+god+chapter+19
    • https://cdn-cms.f-static.net/uploads/4385021/normal_602c3988b5eea.pdf
    • https://cdn-cms.f-static.net/uploads/4386829/normal_601823fc717fb.pdf
    • https://static.s123-cdn-static.com/uploads/4491925/normal_5ff8c3d09ef19.pdf
    • http://leree4.club/book_of_enoch_kjvjpvvb.pdf
    • https://cdn-cms.f-static.net/uploads/4446045/normal_600ecf7458134.pdf
    • https://cdn.sqhk.co/kakolutezegu/iejbgjy/9822061734.pdf
    • https://static.s123-cdn-static.com/uploads/4479715/normal_5fc6128b78aac.pdf
    • https://cdn-cms.f-static.net/uploads/4488103/normal_601d4b3ec486d.pdf
    • https://cdn.sqhk.co/lofakekaf/wifTghi/bubble_shooter_pro_app_download.pdf
    • http://xiwikene.iblogger.org/manual_do_processo_de_execuo_araken_de_assis.pdf
    • http://m-laskin.ru/43067667642bl1p1.pdf
    • https://cdn.sqhk.co/potiribuwuf/ejh2cct/london_detective_story_sherlock.pdf
    • http://fruct.space/photoshop_hair_brushes_free_cs3eq9u2.pdf
    • https://cdn.sqhk.co/sewizefaxiki/mQhBicI/marvin_gaye_best_dance_songs.pdf
    • http://wolorafo.22web.org/fireflies_piano_sheet_music_free.pdf
    • https://static.s123-cdn-static.com/uploads/4378604/normal_5ffdb3139b5d4.pdf
    • http://wofonefa.iblogger.org/62477939871.pdf
    • https://cdn.sqhk.co/kakovavop/hhEidxS/bad_granny_armour.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://9d03b195-5c34-4993-8a23-519dd2bddccd.filesusr.com/ugd/9ac058_69ff8560187d4393bbdc56e89a57ebb3.pdf?index=true
    • http://pilevujomeludo.rf.gd/801302854.pdf
    • http://fuzudad.epizy.com/44701134784.pdf
    • https://badbb018-ab4e-499b-b788-960949b82e3d.filesusr.com/ugd/4f4c56_49f20d8670ad4ae59c58937e704aac67.pdf?index=true
    • https://e4034479-4ead-418b-af8c-5be8dc72bdbe.filesusr.com/ugd/1e8759_d312a5bfd8d846b0930c4e4e73a82986.pdf?index=true
    • https://3794eb9c-cc8b-492c-aecc-44533f76aaa6.filesusr.com/ugd/1ee69b_110258a25f7c4f298b9aa607249208a7.pdf?index=true
    • https://089130c0-62ae-4bf1-a93c-656440fe8451.filesusr.com/ugd/738632_10f16025c3ef47569d856c968dc3678f.pdf?index=true
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f544.bin
05a40811d49981e331cab9b0e63535bcb5b0024a41a84c19f54346f743eb98a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF544 5648 bytes
font_01_sfnt_off00010895.bin
ab92e81561de398335abc56d5d4399ed454a8843db914af2788b649b07adde93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10895 10552 bytes

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