Malicious PDF — malware analysis report

Static analysis result for SHA-256 d46988aedefc5909…

MALICIOUS

PDF

82.8 KB Created: 2021-04-01 06:48:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: d6f8bb25f0a67638f6289ed9fe7a46a7 SHA-1: 5876812a1a89eb8f1eea48098be9850205f35c36 SHA-256: d46988aedefc59099a1c8846a433516982a9a540423779cd9bbb201469d16986
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to unit conversion, suggesting a lure to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://maypoin.ru/strik?utm_term=cuanto+equivale+7+8+en+centimetros PDF link annotation
    • http://xujukega.66ghz.com/synergy_kvm_free.pdfIn PDF document text
    • http://dusakopu.iblogger.org/tamil_songs_for_mobile_video.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lexojowal.epizy.com/menevubapasoro.pdfIn PDF document text
    • http://temomij.epizy.com/24053608156.pdfIn PDF document text
    • http://nisuzadusidu.epizy.com/u_can_t_touch_this_instrumental.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/dizazilixoxatupetepavidoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e05926f8-99e7-40b0-a9cc-b3fd4f721c22/mukogixexosevo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f4c2b80-886d-47ce-839c-6272694650d1/pathfinder_adventure_card_game_wrath_of_the_righteous_character_sheets.pdfIn PDF document text
    • http://bizosubage.rf.gd/hunchback_of_notre_dame_esmeralda_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/wedding_invitation_cards_designs_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf1e5ddc-c6c3-4067-9801-b844988351dd/diccionario_ingles_espaol_con_traductor.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/binh_php_tn_t.pdfIn PDF document text
    • http://kenabemaborok.rf.gd/nonuzejam.pdfIn PDF document text
    • http://zokazote.rf.gd/ragexixenigalotob.pdfIn PDF document text
    • https://5849b288-062f-49f8-a71b-da420f1f00fd.filesusr.com/ugd/c068f8_062a0c00182a41bd9f1f2f62117b4f5f.pdf?index=trueIn PDF document text
    • http://zexaxenobu.rf.gd/is_internal_audit_a_good_career.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/duvorefosokizalinurome.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/news_world_report.pdfIn PDF document text
    • https://af0fe010-594a-4ec7-a26b-e2d78e33490d.filesusr.com/ugd/7d2910_0ca33e707ec84301b965b771b58175fc.pdf?index=trueIn PDF document text
    • http://nilipinuz.rf.gd/rassemblement_dmocratique_africain.pdfIn PDF document text
    • https://ba739632-11db-41f7-a023-683a20e55d36.filesusr.com/ugd/99835b_e55119c2a04541aa8329af2020361fe4.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/27914d5f-2a2a-42e5-bddc-71dab0a8e6c5/86761086988.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/84724726246.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
    • 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB8E 6588 bytes
SHA-256: b3260a8b27c40a1c9408c40b3dcfb9ec9ded560232013cbc1ca8de37ebb5a831
font_01_sfnt_off0000ec08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC08 5308 bytes
SHA-256: c176ec91a5ec11e6a042d2ab786399812eab1755ca0984cae188ffb8e74501bd
font_02_sfnt_off0000fe0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE0E 12368 bytes
SHA-256: 0fb26c0637e251f0672b86ebe8171e0b3592077247696d8df50b371be285f69f
font_03_sfnt_off00012667.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12667 16100 bytes
SHA-256: e8be64a599b4775abf69106d1ea2a605297721d8ccc8071fb3d67c702b09cfa6

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