Malicious PDF — malware analysis report

Static analysis result for SHA-256 549b6f649ee26b59…

MALICIOUS

PDF

81.8 KB Created: 2021-03-11 00:48:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e0800d3bfdfe606380125c0e5b28162 SHA-1: b506fdefc745cb6d8fe805746ee1553abc341dfb SHA-256: 549b6f649ee26b59ceac2a5e40005ace5da89d75bfcb16428d1b5d599af612de
174 Risk Score

Malware Insights

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

The PDF is identified as malicious by ClamAV and ML classifiers, and heuristics indicate it's an image-based lure. It contains a large number of external links, including one pointing to http://www19216801.site/sejunejevewijukove1k9w7.pdf, suggesting it's designed to redirect users to malicious sites. The document body is heavily obfuscated, but the presence of external links and the overall structure point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7343

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 81 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://crophysi.ru/award?keyword=speaking+in+tongues+gloria+anzaldua+pdf
    • http://www19216801.site/sejunejevewijukove1k9w7.pdf
    • https://cdn.sqhk.co/dibirolinu/gcxibia/my_main_water_shut_off_valve_is_leaking.pdf
    • https://tebifuwufarul.weebly.com/uploads/1/3/4/8/134886387/kuzif-kugumu.pdf
    • http://shoppingyxplus.xyz/fight_night_freddy_game4giny.pdf
    • https://cdn.sqhk.co/peluxisomex/lidjdjd/rixobimuxuvikitujovusivov.pdf
    • https://cdn.sqhk.co/kuwozubagal/OUMschj/50712308261.pdf
    • https://bewodopogogubak.weebly.com/uploads/1/3/4/8/134886142/vuxav_sodam_buzewibifo_nalej.pdf
    • https://cdn.sqhk.co/dilizilozok/jhF4Uyp/online_javascript_compiler_debugger.pdf
    • https://cdn.sqhk.co/kawonidoza/fhbMhgg/45293783637.pdf
    • https://cdn.sqhk.co/zatufora/jijjheV/79237503812.pdf
    • https://cdn.sqhk.co/negolura/djcrcRd/pafopunusikudazovonot.pdf
    • https://cdn.sqhk.co/sevafeluba/Aggmgda/lanawune.pdf
    • http://nigasheff.xyz/how_to_reset_a_kindle_fire_hdbsfu6.pdf
    • https://cdn.sqhk.co/jisujesox/hbwezIh/plants_vs_zombies_2_game_over.pdf
    • http://rogofideb.onlinewebshop.net/old_school_runescape_bonds_guide.pdf
    • https://141ebdc9-a3c9-4c6d-b8f9-366dbf139dec.filesusr.com/ugd/46bfb0_31488ded9d514a0981c8cdde028534ab.pdf?index=true
    • https://a35aa970-3e4e-4c20-be1f-53d10001bce9.filesusr.com/ugd/af4e73_99b096c764b64e6b96925d13038b8f26.pdf?index=true
    • http://gavawekib.myartsonline.com/how_far_apart_are_mens_hurdles.pdf
    • https://72858ab8-d36f-4bc2-b208-e5ec56e76d01.filesusr.com/ugd/3a4e0e_b51ac849505d435d99b8a3d7329f8542.pdf?index=true
    • http://letutemoxeluz.onlinewebshop.net/samsung_55_inch_led_box_dimensions.pdf