Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd9a644a6883f8bc…

MALICIOUS

PDF

87.6 KB Created: 2021-05-04 04:33:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85cd0379de43ba8466e249d6400480fb SHA-1: 7648383a30f46ab909a46ffdb6554f10895200a9 SHA-256: dd9a644a6883f8bcf73777906f4d8be9dd760d7307132d0132b157451760f070
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically related to phishing. While no scripts were explicitly extracted, the PDF structure and numerous external URLs suggest it's designed to redirect users to potentially harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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
  • 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://ponafet.ru/strik?utm_term=how+might+a+psychiatrist+describe+a+paper+plate+pdf
    • https://guverududilo.weebly.com/uploads/1/3/6/0/136086053/tobapotawi.pdf
    • https://cdn.sqhk.co/duponetix/hiicl9s/spin_the_wheel_yes_or_no.pdf
    • http://larokamexi.sportsontheweb.net/29109686965.pdf
    • http://gefosezidubajoz.scienceontheweb.net/winamegusanonisivuxopak.pdf
    • http://bowuvudofi.scienceontheweb.net/indoor_cricket_rules.pdf
    • https://venunuwaxel.weebly.com/uploads/1/3/2/7/132740799/litoladutometa.pdf
    • http://tamodemuror.getenjoyment.net/automation_engineer_resume.pdf
    • http://dusanaputojinon.mygamesonline.org/lion_king_circle_of_life_piano_sheet_music.pdf
    • http://nuxipawuxodiwa.getenjoyment.net/the_boer_war_1899_to_1902_summary.pdf
    • http://metarapuw.mypressonline.com/the_stranger_albert_camus_espaol.pdf
    • https://cdn.sqhk.co/jasamomedam/jaheMvY/95942906612.pdf
    • http://kenugizi.getenjoyment.net/26778055492.pdf
    • https://cdn.sqhk.co/noxibogalu/ie9Vemo/sowutegebuxebe.pdf
    • https://kajugolake.weebly.com/uploads/1/3/0/9/130969904/5868194.pdf
    • https://nekusudowup.weebly.com/uploads/1/3/5/3/135315851/vilepugoku_vagobinifegefe_xupetel_furik.pdf
    • https://cdn.sqhk.co/jifigetuxu/8jijcjb/cardiology_notes_medical_students.pdf
    • https://cdn.sqhk.co/lutumodigi/hgcwhc7/59764788431.pdf
    • https://cdn.sqhk.co/mugukawi/ckjl9Jx/wozemuk.pdf
    • http://duvejajenivogik.getenjoyment.net/fipawiduxamumizaruvovuj.pdf
    • http://wopexobow.mywebcommunity.org/estudio_de_la_historia_arnold_j._toynbee.pdf
    • https://cdn.sqhk.co/zivudasexoni/UPiwQPA/tivemevedupoginoj.pdf
    • https://cdn.sqhk.co/befozaxulot/kjhF3jg/driving_zone_russia.pdf
    • https://cdn.sqhk.co/pugijuzo/jciSbMU/mezitotegukikadavo.pdf
    • https://cdn.sqhk.co/logubaxe/hdjaRhb/wijaxawedafogixofixevepu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/d2a7a6cf-1738-4633-aba3-a822f6ae2441/gekedetigodu.pdf
    • https://uploads.strikinglycdn.com/files/b94c72bc-1803-4134-9c42-d57bff74fdcb/american_government_textbook_free.pdf
    • https://uploads.strikinglycdn.com/files/06288fc4-074f-4fe1-ace4-1e3cb0881986/2015_lexus_ls_460_for_sale_near_me.pdf
    • https://uploads.strikinglycdn.com/files/3bae8bec-6728-4296-ae22-3b5a25a8e2ca/8286179971.pdf
    • https://uploads.strikinglycdn.com/files/080ef769-ffa8-4c0e-b834-a01cd533ec6e/62820309934.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_off0001031b.bin
12a995b31ca6e39913a8766aa38f2fd682a370f3bb9fbaacb217d4c0565f9bf9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1031B 5544 bytes
font_01_sfnt_off00011605.bin
a6c267466876cd8f4291aaee5b61d8e6d88c5961d51600e893bb92d57aecfced		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11605 12608 bytes
font_02_sfnt_off00013f8a.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13F8A 4324 bytes

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