Malicious PDF — malware analysis report

Static analysis result for SHA-256 87efbfd61679e837…

MALICIOUS

PDF

72.7 KB Created: 2021-05-06 02:06:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 3d1019535147da2ddfa11876b40e03e3 SHA-1: 1111ce412e603a3c9305c0d8e77a069db7bdd260 SHA-256: 87efbfd61679e83724b841e7a2c4a2ba9d805f53ab820effd47e5dfbaa412e7a
184 Risk Score

Malware Insights

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

This PDF file contains a significant number of external links, indicating it functions as a link farm. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and ML classification strongly suggests malicious intent. The primary goal appears to be directing users to potentially malicious or phishing-related websites hosted on disposable domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8704

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.
  • 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
  • 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/strik?utm_term=how+to+wear+a+mask+and+not+steam+up+your+glasses PDF link annotation
    • http://matrixbicycles.com/bitiya_rani_song_by_sureshvv3gr.pdfIn PDF document text
    • https://banafovogakake.weebly.com/uploads/1/3/5/3/135326552/440f272acd692f4.pdfIn PDF document text
    • https://cdn.sqhk.co/sofizagumup/Dhd2Eeq/thai_alphabet_flashcards.pdfIn PDF document text
    • https://wijuluberaselak.weebly.com/uploads/1/3/4/0/134016921/fobewilomevog-fubibutir-kukejogixa-tomuluz.pdfIn PDF document text
    • https://tererenigi.weebly.com/uploads/1/3/1/4/131405956/3967026.pdfIn PDF document text
    • https://ferafavobob.weebly.com/uploads/1/3/4/6/134671558/7749396.pdfIn PDF document text
    • https://vizedaxitexoter.weebly.com/uploads/1/3/4/7/134740617/sodumidaxepuzex-dezexike-fesuto.pdfIn PDF document text
    • http://curvepreloved.com/let_us_come_boldly_unto_the_throne_room_of_graceziwxh.pdfIn PDF document text
    • https://cdn.sqhk.co/rifokinimito/jgVeiha/zanexifisulox.pdfIn PDF document text
    • http://idem-peshkom.ru/bypass_proxy_android_mobilexwfie.pdfIn PDF document text
    • http://purpless.vip/lazonulamoje1p46z.pdfIn PDF document text
    • https://cdn.sqhk.co/belerudoxej/higfhjQ/xukenusetitafu.pdfIn PDF document text
    • https://kovakaxidaxid.weebly.com/uploads/1/3/5/3/135322813/509726.pdfIn PDF document text
    • http://groby-ritual.online/1099542203px0fd.pdfIn PDF document text
    • https://tusezewepoxir.weebly.com/uploads/1/3/4/3/134339989/ede33.pdfIn PDF document text
    • https://gafepidata.weebly.com/uploads/1/3/0/7/130776025/gukerekema.pdfIn PDF document text
    • https://mateboxabivof.weebly.com/uploads/1/3/4/7/134763458/f4a44.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ed4d48c2-14ea-47f5-a89a-b82193587323.filesusr.com/ugd/8ce377_6034a2f44f7d4e53ac7b764a36c084c1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nowokil/center_radius_form_from_graph.pdfIn PDF document text
    • https://aabf49e0-5477-4fd2-8456-a986ef8f2a87.filesusr.com/ugd/9e14ca_93f974635ebc4f6db25cc83d3176da58.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/21098390122.pdfIn PDF document text
    • https://856cb5e6-6c81-45ce-9604-b57907a15cd2.filesusr.com/ugd/cc3ca9_4451a1e527ff47ef94cf9f6d33a804eb.pdf?index=trueIn PDF document text
    • https://24a70dd4-b549-4b9e-9c0a-6eea45ab85ad.filesusr.com/ugd/ab0c63_bfbe6758d5644cac87ba99a986840028.pdf?index=trueIn 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_off000102f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F2 5332 bytes
SHA-256: 581dcc9dd1098e444ce3721d9b6932ed4c7917b427c1678c5b32e1f026d048db
font_01_sfnt_off00011507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11507 2424 bytes
SHA-256: 2a8164ef99d4ac08ec695bedeb2e15ef85337d5b9083721bb579665dcffe7c9c

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