Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d269eb3a939798f…

MALICIOUS

PDF

96.9 KB Created: 2021-09-19 17:03:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 11559b77abd805ee8845f958842dfc29 SHA-1: fbebc9f697a75757718e2fb50434a255d8873af2 SHA-256: 6d269eb3a939798f2899e6b69bb2483320173b84cdbcf124da9355524de41422
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs that function as a link farm, directing users to download files, with one URL specifically mentioning 'live net tv 4.6 download'. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests a malicious intent to distribute unwanted or harmful content through a deceptive setup.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 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://wastran.ru/uplcv?utm_term=live+net+tv+4.6+download+2020 PDF link annotation
    • http://shopcode.ru/uploads/file/xudimelesukixamugi.pdfIn PDF document text
    • https://myparrotfood.com/user_files/files/12352990873.pdfIn PDF document text
    • https://dolnoslaskialarmsmogowy.pl/imgturysta/files/2952450561.pdfIn PDF document text
    • http://boletos.luzservicos.com/ckfinder/userfiles/files/zuwirurepigalesowu.pdfIn PDF document text
    • http://psycare-spb.com/userfiles/file/xomuwutarasifuno.pdfIn PDF document text
    • http://jyjjapan.jp/files/ckeditor/files/81377742889.pdfIn PDF document text
    • https://hv2barrier.com/application/third_party/ckfinder/userfiles/files/34483585623.pdfIn PDF document text
    • https://webvitamin.vn/app/webroot/uploads/files/5848588736.pdfIn PDF document text
    • http://runbo.net/upfiles/files/16320085255770.pdfIn PDF document text
    • https://almondzwealth.com/administrator/imagetemp/file/julevojisun.pdfIn PDF document text
    • http://sahrugs.com/userfiles/file/wefulevuw.pdfIn PDF document text
    • http://zhatuogz.com/uploadfile/file/lutirader.pdfIn PDF document text
    • http://lyzjkgm.com/d/files/kowonojijotajojoxujifawo.pdfIn PDF document text
    • http://vagyonvedelemszolnok.hu/admin/fck_upload/file/wajeborusa.pdfIn PDF document text
    • http://nasfthr.com/userfiles/file/68056215998.pdfIn PDF document text
    • http://tlumacz-bialystok.pl/pliki/file/83618554109.pdfIn PDF document text
    • https://vroa.pl/chplusfiles/file/59410327560.pdfIn PDF document text
    • http://npxbyy.com/wang3_3_10_27/Upload/Upload/file/2021961748289578.pdfIn PDF document text
    • http://jinruily.com/UploadFile/file/20210915183943321.pdfIn PDF document text
    • http://vanguardhungary.hu/userfiles/file/lubosipobufusitemakafa.pdfIn PDF document text
    • https://ksuskalology.com/images/file/mivaviturive.pdfIn PDF document text
    • http://leeharringtonhomes.com/userfiles/file/batewepozizewadilaxogivuz.pdfIn PDF document text
    • http://cgl.lu/userfiles/files/miwefuvidewubizinozavivi.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000114cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114CF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012ce1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CE1 18320 bytes
SHA-256: 2d5697ff6f5d166c142a7a1db3849790c158f5f66946d9f5dbda9115adb4bd53
font_02_sfnt_off00015d09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D09 10636 bytes
SHA-256: ba70207ec100c5c1bab9b42e8d10d6adf7e3b1ddbabad718dfe34fa8f61ba1b5

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