Malicious PDF — malware analysis report

Static analysis result for SHA-256 6da75d3f50ba4174…

MALICIOUS

PDF

79.7 KB Created: 2021-09-10 09:47:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: f6e27f325850df85859698f7c79bbbbf SHA-1: 2bf3d6276279fa78401fd490e73821594f527716 SHA-256: 6da75d3f50ba417483f4b226218c235e6eae1557b82905164040552b27a36665
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs, including one pointing to 'allytemp.ru', which is likely part of a phishing or malware distribution scheme. The PDF's structure and the presence of embedded links suggest it's intended to redirect users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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://allytemp.ru/uplcv?utm_term=oreo+tv+mod+apk PDF link annotation
    • http://st-johnson.com/Uploadfiles/files/79998749137.pdfIn PDF document text
    • https://maintogelonline2.com/contents/files/41542844816.pdfIn PDF document text
    • http://batterseataxi.com/survey/userfiles/files/xuxade.pdfIn PDF document text
    • http://lussoleathertiles.com/test4/EDITOR/example/v2/userfiles/file/nefafemebimovove.pdfIn PDF document text
    • https://ratsimae.ee/media/contents/file/61855334679.pdfIn PDF document text
    • http://burragebrothers.org/demo/jolie/beta/userfiles/files/gufezigusoduwoxavadawored.pdfIn PDF document text
    • http://chiangmai-esc.net/user_img/files/tunolaxak.pdfIn PDF document text
    • http://qishuochem.com/siicea/userfiles/file/22872226947.pdfIn PDF document text
    • http://cdseoulps.com/uploadfile/fckeditor/file/fokegepewito.pdfIn PDF document text
    • https://digicpictures.com/downloads/tofudewulafarivi.pdfIn PDF document text
    • https://aljuboori.com/userfiles/files/21218015213.pdfIn PDF document text
    • https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/8a24c455a76cf762a98f7e2e40334f6a/xagapirulinegizami.pdfIn PDF document text
    • http://orchid-daikanyama.com/userfiles/file/zekuxulofugujipivep.pdfIn PDF document text
    • http://cuacuontoanthang.com/media/file/66705834704.pdfIn PDF document text
    • http://www.temaricerca.com/entry2013/admin/ckfinder/userfiles/files/lujuzunadirijawimokidesof.pdfIn PDF document text
    • http://rapet.hu/files/febapenukak.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/07466ab0c64aaa42f17523c40f296d30/32859787697.pdfIn PDF document text
    • https://b2bircruise.travflex.com/bot/ckfinder/uf/files/76864373640.pdfIn PDF document text
    • http://fullx.net/files/89329359495.pdfIn PDF document text
    • http://pokemom2.com/uploads/files/senewosujave.pdfIn PDF document text
    • http://optykglowacki.pl/obrazki/files/8986612934.pdfIn PDF document text
    • https://tortugafilms.ca/adminfiles/file/76606001403.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_off0000d502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD502 17660 bytes
SHA-256: 471e27c1f0df78602c87a897128202cf4f88a88b04db3944a0bd8dc9213037ed
font_01_sfnt_off000102a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102A6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011abd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ABD 10324 bytes
SHA-256: b1b1a05a161e874719c5fef3838c8fb018b8abae4f1626b9d23dde09fd8bf33b

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