Malicious PDF — malware analysis report

Static analysis result for SHA-256 74de446b70053893…

MALICIOUS

PDF

68.8 KB Created: 2021-09-29 02:59:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 1a88566f8c9fcd8f81591ed09dd5c244 SHA-1: 7e769549974a8e7cb0fd382bb8a6bee5a93c355b SHA-256: 74de446b700538930309cc7b9db57f3b67f727b9900e0aebc50452eeaf37753b
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded JavaScript and numerous external URIs, many of which are part of a link farm hosted on disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The embedded JavaScript is likely used to redirect the user to one of the malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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 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.
  • 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://crewmak.ru/uplcv?utm_term=moto+mx3+unblocked PDF link annotation
    • http://sevoir.hu/uploads/file/bizimukovinodilobem.pdfIn PDF document text
    • https://sunarchegypt.com/userfiles/file/31605033598.pdfIn PDF document text
    • http://oecschool.com/userfiles/file/15375315536.pdfIn PDF document text
    • http://speednewslive24.com/assets/ckfinder/core/connector/php/uploads/files/gakojowevegolej.pdfIn PDF document text
    • https://millersexpress.com/userfiles/file/16728706071.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/5102a7ba1deec7db14c2a1db8d8c1dd7/buxovisugule.pdfIn PDF document text
    • http://rbtyutj01.com/userfiles/files/muxugosunimaxamut.pdfIn PDF document text
    • http://skontrolsengineering.com/file_media/file_image/file/kevaz.pdfIn PDF document text
    • https://mclandpin.com/calisma2/files/uploads/79531446056.pdfIn PDF document text
    • http://nhac.ditimchanly.org/Images_upload/files/6520837480.pdfIn PDF document text
    • http://nprofit.hk/userfiles/givojij.pdfIn PDF document text
    • http://casier-a-bouteilles.fr/file/93394729849.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613b53baa90bd---wekodu.pdfIn PDF document text
    • https://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/lokoramiz.pdfIn PDF document text
    • http://futimisdev.com/userfiles/file/ziluvepirimozezemumekuwa.pdfIn PDF document text
    • http://xn--80aafbjcazdrhzgiddbbcsg4l.xn--p1ai/pict/file/82667968368.pdfIn PDF document text
    • http://sameiroeventos.pt/ficheiros/62248103794.pdfIn PDF document text
    • http://www.szphotar.com/admin/img/files/48365953708.pdfIn PDF document text
    • http://tidomusica.com/uploads/files/202109140617167290.pdfIn PDF document text
    • http://flygarfield.net/userfiles/file/gonizuda.pdfIn PDF document text
    • http://laptopplus.be/app/webroot/files/userfiles/files/lopebovupomunukufelok.pdfIn PDF document text
    • http://xn--j1aai7d.xn--p1ai/userfiles/file/2366932239.pdfIn PDF document text
    • https://avigailpekelman.com/sites/default/files/file/desusazonag.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_off0000b011.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB011 14756 bytes
SHA-256: 5549e0f88e3e5e6ee9a000c01e1915b8e9af3d7e690cb401e562b24e49b80356
font_01_sfnt_off0000d55c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD55C 10608 bytes
SHA-256: c3332c25c03040f468f6b713b510704cb1103037cd483ecfcff8565f0b079460
font_02_sfnt_off0000edb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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