Malicious PDF — malware analysis report

Static analysis result for SHA-256 44aab15b4e2f2400…

MALICIOUS

PDF

77.2 KB Created: 2021-04-07 06:21:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d4e539cd9ff66bc751f5d6119e35bdb SHA-1: 66a24f2c0cafa40496cd39e348c35d0b471f0e40 SHA-256: 44aab15b4e2f240056b5228c4461b64e9dc7afe990a6dd34b7c89b851e9e659f
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'nipisod.ru' suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document, likely a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 4

  • 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://nipisod.ru/award?keyword=agency+theory+in+auditing+pdf
    • https://cdn.sqhk.co/nakusunegud/jdAVpTb/harris_jewelry_locations.pdf
    • http://dabinepoj.mygamesonline.org/banuxapuk.pdf
    • http://levantemosaic.com/wanajasezm579o.pdf
    • http://lexaxak.mywebcommunity.org/42021441943.pdf
    • http://workmonster.net/aplikasi_hapus_backgroundnzr9b.pdf
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/jiduv.pdf
    • http://xutefizil.getenjoyment.net/ti_ba_ii_plus_tvm_tutorial.pdf
    • https://guzepebizosi.weebly.com/uploads/1/3/4/8/134880367/b93300eb5.pdf
    • http://aicberg.net/gefelepipemupfes8q.pdf
    • https://cdn.sqhk.co/pewesopefim/iMwggtU/71140716837.pdf
    • http://pressit.space/meme_soundboard_pack_download8lp1u.pdf
    • https://cdn.sqhk.co/tororukiwuri/geHpjez/best_new_thrillers_2020_books.pdf
    • http://kenugizi.getenjoyment.net/lunulanidodifogobeletisif.pdf
    • https://cdn.sqhk.co/jivonaxadu/JhhMgdS/68043681513.pdf
    • http://powerhdniy.space/50854582400s25z5.pdf
    • https://bilopoxowug.weebly.com/uploads/1/3/4/4/134439404/jefuginobawe-rodib.pdf
    • http://anbieterbewertung-autoscoutch.com/gudoburog7e73i.pdf
    • https://lejumapufa.weebly.com/uploads/1/3/4/6/134688193/5f01b27c0.pdf
    • http://tixshopclub.fun/agnosias_visuales9h677.pdf
    • https://cdn.sqhk.co/wegifopi/Zhfhaq0/define_galvanized_roofing_sheets.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/6f6f6085-3735-4320-a003-07ae8d40046a/77204657092.pdf
    • https://uploads.strikinglycdn.com/files/3063a7da-88fe-4d8b-99b4-e0de92f829e2/94402132913.pdf
    • https://uploads.strikinglycdn.com/files/2023745e-f0cf-4ee7-9c3d-dec10e1c2cf7/horse_drawn_carriage_rides_near_me.pdf
    • http://xufolat.atwebpages.com/metojupapemome.pdf
    • https://uploads.strikinglycdn.com/files/3bb439df-9ba1-45fc-8547-5d41ef624f17/padogoman.pdf
    • https://uploads.strikinglycdn.com/files/2e9d8e4a-f01a-4996-b448-1b2dd8d90cd8/kenmore_800_dryer_replacement_parts.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_off0000f167.bin
53b55e70271ba6a3e0806da557cebb560cba381f81e9c1190f26be8e40989284		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF167 5296 bytes
font_01_sfnt_off00010375.bin
c8ad7850b964b146979d72db6eeac3b7542795e6d41c0ea729f032c32f02a888		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10375 10568 bytes

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