Malicious PDF — malware analysis report

Static analysis result for SHA-256 5beb5c41bf08c09e…

MALICIOUS

PDF

72.8 KB Created: 2021-09-20 01:59:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: a9edcb2d682e9361377ef050db827a37 SHA-1: 28e239b55cd64c9f7592c8cbc33b5c513af6a0c6 SHA-256: 5beb5c41bf08c09eeddd880d747599f3a24a741cedd3eb54b465f02b5679c80b
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious activity, likely leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://findmecakes.com/userfiles/files/19887174446.pdf In PDF document text
    • http://thanhcongtechtra.com/upload/files/62146946380.pdfIn PDF document text
    • http://jar-ted.pl/file/63113931628.pdfIn PDF document text
    • https://rubfila.in/files/file/lulojefuxaxe.pdfIn PDF document text
    • http://matrix-corporation.com/upfiles/editor/files/16813478788.pdfIn PDF document text
    • http://epicridesnepal.com/files/20154067414.pdfIn PDF document text
    • http://bukharaalpharetta.com/sites/default/files/file/vibakifidalaba.pdfIn PDF document text
    • http://rebeccaosborne.com/uploads/taxudepamaravemolepabun.pdfIn PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147c0203844d---seropesekixajabukitejesak.pdfIn PDF document text
    • http://aodaiminhhanh.com/app/webroot/uploads/files/fokufepirikatu.pdfIn PDF document text
    • http://sallytour.com/FileData/ckfinder/files/20210908_26ACF4F384AA65B3.pdfIn PDF document text
    • https://eltechma.com/zdjecia/fck/file/46790043897.pdfIn PDF document text
    • https://net-mex.hu/ckfinder/userfiles/files/83122132227.pdfIn PDF document text
    • https://muzpony.de/obrazki/file/54713117711.pdfIn PDF document text
    • http://tokyoto.pl/UserFiles/file/5123073841.pdfIn PDF document text
    • http://palaciodelosnavas.com/userfiles/file/78575468807.pdfIn PDF document text
    • http://guerrazzi.info/userfiles/files/50852611942.pdfIn PDF document text
    • http://tech-sub.com/userfiles/file/67552227082.pdfIn PDF document text
    • https://lucky-erotic-massage-bucharest.ro/ckfinder/userfiles/files/dazaramod.pdfIn PDF document text
    • http://budaikepkeret.hu/uploads/file/82109528983.pdfIn PDF document text
    • http://bielwod.com/userfiles/file/97588164137.pdfIn PDF document text
    • http://brandiassociati.it/userfiles/file/85290532126.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=ben+10+protector+of+earth+apk+androidPDF link annotation
    • 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_off0000b9d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9D1 10824 bytes
SHA-256: 1b006cdb6fb8d89c4d3fd73ee1c4f6676de13a3e6469a4d407dbc31b28c59ccf
font_01_sfnt_off0000d2c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2C2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ead4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD4 16652 bytes
SHA-256: fbaf9cda18c58bf4eb108311d426c5ffa6be923bf17bf0eebb07c07518ec6c0c

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