Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f3fe59bb1b661c5…

MALICIOUS

PDF

72.9 KB Created: 2021-04-04 12:32:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0e2c52e704ee83192009058a55265b27 SHA-1: 412c0407a7fc9a4fd0f5533ab746f7ee0c6b6888 SHA-256: 8f3fe59bb1b661c52234e0bb9107ba0f9cd70283765e6e55a926c0ff7f6af015
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified by heuristics as a potential phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of embedded URIs and the nature of PDF malware suggest an attempt to redirect the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xajibur.ru/wix?keyword=shawnee+high+school+wolf+lake+illinois
    • https://cdn.sqhk.co/faxiwapa/ififtgd/marvel_contest_of_champions_maximum_level.pdf
    • http://getporte.xyz/xubuxupubitizeboxz3ogu.pdf
    • https://ketezujozak.weebly.com/uploads/1/3/4/7/134744557/zitumimugep.pdf
    • http://ludshop.xyz/lenovo_yoga_book_user_manualay8i2.pdf
    • https://wivutabunoku.weebly.com/uploads/1/3/6/0/136020101/90d2f7.pdf
    • https://nuxelimifa.weebly.com/uploads/1/3/0/7/130776070/9008192.pdf
    • http://esclick.pro/jexudidafumafurexaptuumb.pdf
    • https://lijasefevofik.weebly.com/uploads/1/3/4/8/134889997/rudulodofaza.pdf
    • http://libralab.digital/how_to_control_sonos_soundbar_with_apple_tv_remote4208q.pdf
    • https://cdn.sqhk.co/nunamarajop/4jbhaje/15483735979.pdf
    • http://lienforkid.com/2569475981828ce6.pdf
    • https://cdn.sqhk.co/fowifabibu/ziagdD7/94963595947.pdf
    • https://cdn.sqhk.co/lazodadevab/QTxjf0c/infected_tonsil_remnants.pdf
    • https://cdn.sqhk.co/korokotuduki/aThe9gg/lake_shore_drive_sheet_music_free.pdf
    • https://pevusipifo.weebly.com/uploads/1/3/4/8/134863194/depatukazugo.pdf
    • https://zipexozinapewew.weebly.com/uploads/1/3/4/3/134339437/d98ef66e3e25921.pdf
    • https://xizirasifeda.weebly.com/uploads/1/3/4/3/134344010/565faa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a79ea150-c065-4535-b0d6-4441c110b3bb/glencoe_algebra_1_textbook_answer_key.pdf
    • https://uploads.strikinglycdn.com/files/1f2ac7fd-101a-4aa3-8830-74dba7478c22/why_does_my_microwave_not_heat_food.pdf
    • https://uploads.strikinglycdn.com/files/16b84eef-11c6-47e9-b16d-1c5f65a8db58/are_craftsman_torque_wrenches_lifetime_warranty.pdf
    • https://s3.amazonaws.com/mefonevimimix/tagalog_dubbed_full_movie.pdf
    • https://s3.amazonaws.com/zafaronivaj/survival_food_buckets_walmart.pdf
    • https://uploads.strikinglycdn.com/files/b907adef-9260-4cdf-9f3c-b3cf1cea28d4/40447630653.pdf
    • https://s3.amazonaws.com/suximawo/lip_balm_tube_labels_template.pdf
    • 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_off0000db6a.bin
ca0a0620af61eaf66c35d211566cdb19130dfe41ea3f5051250c94eabb2d076c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB6A 5304 bytes
font_01_sfnt_off0000ed92.bin
0896935e2bb53e96f3c77dd0f5e2d09a536ea262a66dbbca2de995dd568c9af8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED92 11312 bytes

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