Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fd4924ef3ae4a5d…

MALICIOUS

PDF

88.5 KB Created: 2021-03-25 10:40:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: c735c1a070a77a19f0755b157eec00e5 SHA-1: 5fecf1662e9f4a2640a89085064187464c233319 SHA-256: 6fd4924ef3ae4a5d9dd2a8393359cf9c0318bce937b6bd88275122a3e43d09de
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 spam and phishing. The heuristic PDF_SEO_LINK_FARM indicates a large number of external links, and the ClamAV detection as Pdf.Phishing.Trojan suggests malicious intent. The embedded URL and the document body content point towards a lure for downloading potentially malicious software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://jumiwimov.ru/wix?keyword=wii+backup+loader+download PDF link annotation
    • https://zadelenipavuluv.weebly.com/uploads/1/3/4/5/134595340/modupuwaxutiretu.pdfIn PDF document text
    • https://ponozivodu.weebly.com/uploads/1/3/0/7/130775347/2208093627822.pdfIn PDF document text
    • https://sozetodu.weebly.com/uploads/1/3/4/2/134265488/galosusazijes.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/how_to_facebook_recovery.pdfIn PDF document text
    • http://fakurivevid.scienceontheweb.net/angularjs_node_js_tutorial.pdfIn PDF document text
    • https://lasapiboxemifol.weebly.com/uploads/1/3/4/8/134865682/sabifoku_volefajidav_tabikavimesowa_zefetaja.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/f308a2d0-8bb8-4f83-9fdd-4682af4fe9de/pozoko.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/wowadisubaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cac83b11-fb55-4581-bfa3-533156a5af9a/titan_440i_paint_sprayer_wont_prime.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/kodofokanirabi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37b03a07-842f-4551-ab6d-07ab32b86208/56803839435.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/zuguf.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/power_of_attorney_new_york.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/mera_bhai_tu_new_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bab2fe2-a72f-496b-bf31-8ef99f47d298/rixajikusotibegosagipivon.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/how_to_turn_off_overscan_on_sanyo_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/bangla_tv_hd_apps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67035522-ec9f-4a00-98ca-789dac9f2c0d/ferelikolizovow.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/13264802238.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1cf9b11-9432-4f71-8853-c1711603aa01/11569139578.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/cisco_netacad_test_answers_chapter_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c92d8c32-5962-4432-b614-195d320d52b1/romeo_and_juliet_movie_1968_online.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/66200411491.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f288edf2-f0e8-4f28-8ebd-ca5a5216b362/romeo_and_juliet_act_1_worksheet_answer_key.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010e17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E17 5000 bytes
SHA-256: 168315ca607abc302ced3bce9db8e7652d7f75ef2e751982e61a90554ab5500f
font_01_sfnt_off00011f20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F20 11428 bytes
SHA-256: 0a3d1f3c95ba7e2e2717254c2bc8b503de08e133c789a330d47ff88c155dc682
font_02_sfnt_off00014623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14623 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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