Malicious PDF — malware analysis report

Static analysis result for SHA-256 80097a773147a59a…

MALICIOUS

PDF

79.4 KB Created: 2021-09-22 17:27:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: f463618e1f6834705e45275de4896eab SHA-1: 5b6b07af82ecc9782ed13e060fbd9d7c67d92869 SHA-256: 80097a773147a59a724fe4b684b9662ab7dde440069e9d4ab64aa67ea09d69f0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF contains embedded JavaScript and multiple external URLs, indicating it is designed to redirect users to malicious content. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document instructs users to open a password-protected archive, a common tactic to bypass security filters. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://catamma.ru/uplcv?utm_term=how+to+share+wifi+on+iphone+to+android PDF link annotation
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/161351f7299ccc---39689920886.pdfIn PDF document text
    • https://imad0c0.com/js/ckfinder/userfiles/files/48755605122.pdfIn PDF document text
    • http://shopcloud.cloud/ckfinder/userfiles/files/81050018598.pdfIn PDF document text
    • http://asztalosweb.hu/userfiles/file/bopiwugolenug.pdfIn PDF document text
    • http://svatba-emi.com/uploads/pages/files/44024468859.pdfIn PDF document text
    • https://stmpallet.com/ckfinder/userfiles/files/98040749041.pdfIn PDF document text
    • https://kligi.viart.lt/ckfinder/userfiles/files/leweludulibitisakuk.pdfIn PDF document text
    • https://bomando.bomsolar.com/uploadfiles/files/muzoresiwuwepifil.pdfIn PDF document text
    • http://www.halpellet.hu/userfiles/files/38279888011.pdfIn PDF document text
    • http://ljjxmining.com/uploadfile/file///2021091521574685.pdfIn PDF document text
    • http://parafiasadkowice.pl/pliki/wufutukederigurisegek.pdfIn PDF document text
    • https://coop-alternatives.fr/images/images/240897946.pdfIn PDF document text
    • https://adikkeempat.com/contents/files/sivarakudetorodinirofak.pdfIn PDF document text
    • http://maydemtienvn.com/upload/files/pomoredevezumebewaxuk.pdfIn PDF document text
    • http://phyllisrubensteinlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/gozidomijozimezaxovi.pdfIn PDF document text
    • http://vetusmeter.com/images/upload/File/13259459539.pdfIn PDF document text
    • http://solee.cn/ckfinder/userfiles/files/33717633913.pdfIn PDF document text
    • http://www.ks-klinika.ru/ckfinder/userfiles/files/rekurogawarasikogene.pdfIn PDF document text
    • http://abpjse.news-read.com/upload/files/tozikedixariridirugedon.pdfIn PDF document text
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16134a1703c45b---54269782527.pdfIn PDF document text
    • http://dienlanhlongan.com/upload/files/79205820272.pdfIn PDF document text
    • http://mamnonkitty.com/webroot/img/posts/files/6389113730.pdfIn PDF document text
    • http://sromedical.com/file_media/file_image/file/70501995317.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_off0000d10d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD10D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e91f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE91F 18220 bytes
SHA-256: 8fb0a056f72704f676284bdb8a5e82271c43ced738d5d6908c6cee922a18e867
font_02_sfnt_off000117e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117E2 10628 bytes
SHA-256: 75ab9c540a373d2df6da3ce9d46a3122b60cf378013b8829725d25b2ce8e001e