Malicious PDF — malware analysis report

Static analysis result for SHA-256 27aad0e0fde137a4…

MALICIOUS

PDF

84.2 KB Created: 2021-03-12 16:10:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cdb29bda811253daefe32c9c59cc6efa SHA-1: e756f265948d390ce0e2674d6f4ff4e52348cb30 SHA-256: 27aad0e0fde137a43dbff2e8eebb9c930b3dc9b81c686725377790f57c4cfc0c
196 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a critical detection for a link farm and a high ML score. The 'SE_ADVANCE_FEE_SCAM_LURE' heuristic specifically indicates the document's content is designed to deceive users with promises of prizes or funds, requiring them to fulfill delivery requirements, which is a common advance-fee fraud tactic. The presence of numerous external links, including a suspicious one to 'resalured.ru', suggests an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://resalured.ru/123?utm_term=acute+stroke+ready+hospital+performance+measures
    • http://magnitoli-2ekran.site/denon_avr_x4000_wlan950cy.pdf
    • http://simcars.ru/sunshine_coast_tourist_mapftph6.pdf
    • http://drenajkrasnodar.ru/mijoxowedasali0agmf.pdf
    • https://zekedijudanafow.weebly.com/uploads/1/3/0/8/130874467/fevife-gajukema-novem.pdf
    • https://dumidonawusirug.weebly.com/uploads/1/3/5/3/135306770/1393174.pdf
    • https://mijezuri.weebly.com/uploads/1/3/0/9/130969422/lajuxawewesogexuxop.pdf
    • http://sokfresh.fun/glitch_cam_pro_apk_premium_2020tw2yy.pdf
    • https://gugewixurot.weebly.com/uploads/1/3/4/3/134393699/detarezubari_lutonozaxedawe_dijugal_baram.pdf
    • http://shopyou.online/riwifupejolegemedi7rwzo.pdf
    • http://creamwalls.online/tuberembkuh4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/f95cafe6-6d96-4fb2-9808-3adf4e2f3a86/hard_reset_samsung_galaxy_grand_prime__plus_g532f_formatage.pdf
    • https://s3.amazonaws.com/jirebonudur/annamayya_telugu_mp4_video_songs_free.pdf
    • https://uploads.strikinglycdn.com/files/5329ebf8-b327-4c72-9566-b6eceb72822f/18577734692.pdf
    • https://uploads.strikinglycdn.com/files/2379ff8e-c89a-4dce-bfe4-93d9903d94f9/what_is_a_good_mathematical_proof.pdf
    • https://uploads.strikinglycdn.com/files/dce9313f-ff27-4dfb-ac6c-3f5db90b3727/how_to_start_your_own_trampoline_park.pdf
    • https://s3.amazonaws.com/wolawatin/pefibokuxeranuwasu.pdf
    • https://uploads.strikinglycdn.com/files/e6621b18-112f-451e-96af-747863236dd1/hp_color_laserjet_cp2025_roller_kit.pdf
    • https://uploads.strikinglycdn.com/files/fa50ed81-c1ff-4ee5-8d3c-f1ec7c93f2fa/xejoxo.pdf
    • https://s3.amazonaws.com/dubiditiginowo/motokasariwit.pdf
    • https://uploads.strikinglycdn.com/files/766d7e3a-013c-4b7f-b1af-c3ccc01a2e39/31410267282.pdf
    • https://uploads.strikinglycdn.com/files/5b3fdebb-e02f-48cb-90c4-a285980cf5ec/how_to_adjust_craftsman_weed_eater_carburetor.pdf
    • https://uploads.strikinglycdn.com/files/38e7125e-919b-4078-99c0-2fbc1e492438/terigofebek.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_off000108eb.bin
7addd30fe10bd87354e2b46fc19cb0dc11903d588273115be78303155bf1567a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108EB 5552 bytes
font_01_sfnt_off00011bb3.bin
04ec29ea9601c5484ea14d62bf9e05e172273af8d28cef245aa9732aa3293714		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11BB3 11100 bytes

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