Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c2de097c7fd50a2…

MALICIOUS

PDF

91.7 KB Created: 2021-03-08 04:44:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 877ac38b00e33da7e9ad0d7cded36b71 SHA-1: 907fd22bdddbb77c5ac7b4aad7f8ae4d7897b4c4 SHA-256: 6c2de097c7fd50a294536982d5ae4d868a6849ee7e1fa8026e2080a97fd94fb3
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://fokemale.ru/strik?utm_term=how+does+2+pair+work+in+poker PDF link annotation
    • https://pusiruse.weebly.com/uploads/1/3/4/7/134717846/8519466.pdfIn PDF document text
    • http://pakirekugep.scienceontheweb.net/bosenaximelugujirofot.pdfIn PDF document text
    • https://rarinuda.weebly.com/uploads/1/3/5/3/135349313/nimug-gevajilogo-pakefi.pdfIn PDF document text
    • https://kibanelamuvudu.weebly.com/uploads/1/3/0/9/130969844/vupetazipaviru.pdfIn PDF document text
    • http://gakagebir.mypressonline.com/im_ok_youre_ok_summary.pdfIn PDF document text
    • https://zagodifibom.weebly.com/uploads/1/3/0/7/130775293/pexubuw.pdfIn PDF document text
    • https://tipozuroboga.weebly.com/uploads/1/3/4/2/134265922/3af06f2878.pdfIn PDF document text
    • http://nibewubixela.getenjoyment.net/5894198921.pdfIn PDF document text
    • http://sawemawe.mywebcommunity.org/kedorebigapelamikaj.pdfIn PDF document text
    • https://doruxajowivabog.weebly.com/uploads/1/3/4/8/134870444/6383182.pdfIn PDF document text
    • https://sulipebi.weebly.com/uploads/1/3/0/7/130739254/5540843.pdfIn PDF document text
    • https://nenawopoweso.weebly.com/uploads/1/3/1/4/131406478/5840f.pdfIn PDF document text
    • https://ponixojezunuto.weebly.com/uploads/1/3/0/9/130969897/fenudukagafo.pdfIn PDF document text
    • https://xigukiburid.weebly.com/uploads/1/3/2/7/132741693/desemodobabixeli.pdfIn PDF document text
    • https://bumobuzeki.weebly.com/uploads/1/3/4/4/134477779/wazekif_jewajawanidis_pawatalepigi.pdfIn PDF document text
    • https://rimedugomo.weebly.com/uploads/1/3/0/7/130740195/3045246.pdfIn PDF document text
    • http://rupazaduxil.mywebcommunity.org/jipetugadaj.pdfIn PDF document text
    • https://bafumujem.weebly.com/uploads/1/3/4/4/134498711/gilumivopifekuf.pdfIn PDF document text
    • https://kowasazupajobex.weebly.com/uploads/1/3/1/3/131383373/nozefebi-linawagusozu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/827b9711-eac3-4d97-8c43-a99decdc5326/what_is_present_perfect_tense_with_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfb653b8-3bca-4d87-a15e-81165e0fc9a5/photoshop_tutorials_for_beginners_videos_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5e2957c-cc88-467c-b96b-9447448dae27/jadadotepigu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df32038f-bf2e-4017-af39-d1f8931dc906/wugovesu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a795116-cd1d-4f07-9db4-89036bdedcbe/old_skool_vans_blue_fog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9f05c9c-91ea-4f9e-8849-5a66a0eef766/vutarovorafijenab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c4482ec-3624-4d48-8b8f-a21806b8c0de/algorithms_unlocked_reddit.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000128d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128D0 5172 bytes
SHA-256: b907160f3c7ddc4aa74fb6944ebe7d4e4b3432608bfa9ac9862e0103824d73a0
font_01_sfnt_off00013a87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A87 11384 bytes
SHA-256: e8a0b06793b20c82821ae109dbf604e1ad4cc6ae011283d6f65dad06c09224fc

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