Malicious PDF — malware analysis report

Static analysis result for SHA-256 02bf0ab00441e5fc…

MALICIOUS

PDF

95.7 KB Created: 2021-03-30 02:25:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 873d926aadaf26dafb43582880b1b6ed SHA-1: 76c213474867bb6943c93435c599bcd4bb2f3bff SHA-256: 02bf0ab00441e5fc8d8f1aea03a83149598b52b298a831ca04f085d871f311dc
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for SEO manipulation or directing users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' and the presence of many external URLs strongly suggest this behavior. While no scripts were directly extracted, the PDF structure and external links are indicative of a phishing or malicious redirection attempt, likely leveraging embedded JavaScript for execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://golowaki.ru/wix?keyword=mappy+game+unblocked
    • https://static.s123-cdn-static.com/uploads/4411714/normal_5fd05f0a19909.pdf
    • https://cdn.sqhk.co/rilowikapaz/Aijajay/18730575552.pdf
    • https://cdn-cms.f-static.net/uploads/4448328/normal_60443c0b8ea27.pdf
    • https://cdn.sqhk.co/mitukutowum/kfkqgeI/new_ringtone_2020_love_download_mp3.pdf
    • https://cdn.sqhk.co/zonurubo/iiipkgi/world_war_ii_documentary_history_channel.pdf
    • https://cdn.sqhk.co/kamavedes/fij4LVN/nfl_schedule_today_games.pdf
    • https://cdn.sqhk.co/towinomer/bjdNOif/zuzonigome.pdf
    • https://cdn-cms.f-static.net/uploads/4496818/normal_601b2db30d384.pdf
    • https://cdn.sqhk.co/ganuniwiku/iifMgc0/spellbinders_die_cut_machine_accessories_and_tools.pdf
    • https://cdn.sqhk.co/sakupiraf/jcxjhkN/82099740013.pdf
    • https://cdn.sqhk.co/lekusovu/VhiZlje/rolaxomanilixet.pdf
    • https://cdn.sqhk.co/tesigasefaxe/aiclgiX/bomb_squad_mods_free_download.pdf
    • https://cdn-cms.f-static.net/uploads/4365540/normal_60247ae740809.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://a208a2de-cee2-48c2-86e3-c620a022946d.filesusr.com/ugd/dda32d_09f3156486854beea604e2c4a658cadf.pdf?index=true
    • https://a3abd3d7-f7e4-4b0c-86b7-ec358d8c805a.filesusr.com/ugd/97a3b3_817e684ce7e242b89c443a6561666b51.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e758bfcf-2ed7-4abf-9ef2-5933cdc05ee1/samsung_electronics_un32n5300afxza_32_inch_1080p_smart_led_tv_2018.pdf
    • https://uploads.strikinglycdn.com/files/221abfbe-c209-490d-affa-fbbcfca407a6/does_schlage_encode_work_with_smartthings.pdf
    • https://s3.amazonaws.com/donukadizolin/38944441091.pdf
    • https://s3.amazonaws.com/matogapibelifiv/gesiwepiw.pdf
    • https://s3.amazonaws.com/luropiw/glock_17_gen_4_guide_rod.pdf
    • https://uploads.strikinglycdn.com/files/9d3f4283-f65c-40bb-9c77-6290f3800910/wezazujanuvep.pdf
    • https://s3.amazonaws.com/lulelepese/call_of_duty_ghosts_map_guides.pdf
    • https://59548cc9-d6a6-4b2e-bd73-2bfb7290c7b5.filesusr.com/ugd/3fd21f_7ac8623c7e754254a68062b227cb8df2.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010912.bin
064da00a78d225b31c07efe17192cd44181815d53ce2de31aa09f8af3ca67bd2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10912 6976 bytes
font_01_sfnt_off000120d7.bin
148c3fbe4cfaf47aa4fd9d2e6d115a7a9991f7caef95a54e35cf72dbd245bf6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120D7 5432 bytes
font_02_sfnt_off00013358.bin
25e9a93d93511c78eeadaa6c5ad178967e37ad5ff5a63eebdbd2f6cabfbde6c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13358 11996 bytes
font_03_sfnt_off00015c2c.bin
dc93e5052967703781f51559141dcf01c1fc37406ee72b563c21c85f67410e93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15C2C 16096 bytes

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