Malicious PDF — malware analysis report

Static analysis result for SHA-256 860430a67c574a68…

MALICIOUS

PDF

83.7 KB Created: 2021-03-29 11:26:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 18935a87fb4a263df3e53f56fb22db27 SHA-1: 7dadb32aaf9350b27e10fbf4faffddb76d053e85 SHA-256: 860430a67c574a683606261e45e1e0db877d713c853f720ba182abff9568d045
164 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a large number of external links, many of which are suspicious, suggesting a link farm or phishing attempt. The document body, though heavily obfuscated, contains text related to search queries and application names, which is likely a lure to encourage users to click on the embedded malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • 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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://nipisod.ru/strik?utm_term=how+many+gallons+is+a+nordic+hot+tub
    • http://kovativegapok.getenjoyment.net/pamenukusobes.pdf
    • https://cdn.sqhk.co/toriwogadej/02igE1z/dragon_ball_z_bucchigiri_match_apkpure.pdf
    • http://bagomebefekixob.getenjoyment.net/52322062206.pdf
    • https://cdn.sqhk.co/wuxidubez/ejehjgi/49235899552.pdf
    • http://jepenufi.getenjoyment.net/68237027757.pdf
    • http://vaxenovutejuzid.sportsontheweb.net/java_8_lambdas_richard_warburton_download.pdf
    • http://zugugalepew.mypressonline.com/repufepef.pdf
    • https://cdn.sqhk.co/safubuguva/c4XfvLt/car_driving_simulator_download_for_pc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://2a74a384-02d2-446f-82fa-9c0e1d53706e.filesusr.com/ugd/03ef8e_5b282e98c4294185a5ca8c5e10376bd1.pdf?index=true
    • https://569961a5-e6b5-462d-8b38-7193d5e7b20b.filesusr.com/ugd/a37a2e_41ae08c6aa714679850e1eed5a0078ac.pdf?index=true
    • https://uploads.strikinglycdn.com/files/9e598c51-a2f7-4263-b4ef-d5e3c2d25879/xugiwa.pdf
    • https://d6b7b3c7-8429-4d82-9d75-5d5d09e763cc.filesusr.com/ugd/a8c229_048e80a589fb45999dcf3d2faebba751.pdf?index=true
    • https://uploads.strikinglycdn.com/files/331af8a2-14f7-4df7-983b-bceeb27f99f9/how_to_use_clippers_to_do_a_buzz_cut.pdf
    • https://uploads.strikinglycdn.com/files/420b04b2-08a4-44ae-8ea4-63982b13488b/digidesign_002_price.pdf
    • https://uploads.strikinglycdn.com/files/ed535936-7750-4587-85e2-d2f28bcf099b/whats_on_your_mind_quotes.pdf
    • https://3e3188f7-d9e9-48da-9af6-4e6760718ee0.filesusr.com/ugd/4f7562_3f5c65f1a88947c682aee047d815abf5.pdf?index=true
    • https://uploads.strikinglycdn.com/files/b2f6d957-029a-49f2-a37c-b0efe1d2a5a7/15430774409.pdf
    • https://uploads.strikinglycdn.com/files/3746fc39-11d6-4ab4-80c4-eeba86726a1c/bikakiriritasixifule.pdf
    • https://uploads.strikinglycdn.com/files/81d71777-d802-48a9-a461-79b534a391ca/arris_surfboard_sbg6580_review.pdf
    • https://uploads.strikinglycdn.com/files/264f2b35-d07a-4d64-8fe7-e153a6c37fff/why_does_my_scalp_burn.pdf
    • https://uploads.strikinglycdn.com/files/08813e7a-0e34-4a2c-93ce-a605a8dc503b/wufinexonibof.pdf
    • https://uploads.strikinglycdn.com/files/318ef037-533e-48fb-93ab-67354e258f68/what_is_a_jeep_srt8.pdf
    • https://uploads.strikinglycdn.com/files/28f36e72-9c90-4e5b-8f15-e0f0ba3fa596/72841133424.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb5a.bin
4a5c7ce01fe3e55a706171bef3861f9fd5d1268930bb1ec31b148091f644495d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB5A 5412 bytes
font_01_sfnt_off00010d98.bin
819e2c6cdb8199259b0d86242ed8b8dbd20d2f40b9deb7b331135506f8c1e685		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D98 10928 bytes
font_02_sfnt_off00013304.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13304 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.