Malicious PDF — malware analysis report

Static analysis result for SHA-256 cca382dd2045ba38…

MALICIOUS

PDF

71.3 KB Created: 2021-09-26 01:59:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: ada741c6c224371430f0673726291c22 SHA-1: 1a09311771245795d75679084e4b86405b3bac95 SHA-256: cca382dd2045ba38fe875a642da450766fbe8bace6a7b31d2894ec90579afdfd
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of numerous external URIs, many hosted on disposable domains, suggests a link farm designed to redirect users to malicious content, specifically a lure for downloading a FIFA 14 APK. The PDF structure and embedded links are characteristic of phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9916

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://nomylo.ru/uplcv?utm_term=download+fifa+14+apk+obb PDF link annotation
    • http://eperon-kochersberg.com/img_db/60990901407.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1614d16cdd2b13---25968858559.pdfIn PDF document text
    • http://hurtmar.pl/Upload/file/3308237888.pdfIn PDF document text
    • http://www.bluefashion.cz/ckfinder/userfiles/files/71185465650.pdfIn PDF document text
    • http://sipzip.com/userfiles/file/lifurama.pdfIn PDF document text
    • https://infosantiere.ro/userfiles/file/jagoj.pdfIn PDF document text
    • http://cataga.de/beta/files/file/79762369356.pdfIn PDF document text
    • https://12waktu.com/contents/files/linesidutefevolukasixiso.pdfIn PDF document text
    • http://kxxbs.com/uploadfiles/file/a/roxiponazegigewevite.pdfIn PDF document text
    • https://jensbrode.de/files/file/33925041886.pdfIn PDF document text
    • http://sjhrz.com/images/upload/File/pojezipazimesevurovox.pdfIn PDF document text
    • http://meyergarden.com/ckfinder/userfiles/files/basufigirofujax.pdfIn PDF document text
    • http://studioboscono.it/userfiles/files/vigomejigubalawiwatug.pdfIn PDF document text
    • http://trustycctv.com/ckfinder/userfiles/files/57645896670.pdfIn PDF document text
    • https://ddnepal.com/assets/userfiles/files/29062775523.pdfIn PDF document text
    • https://rachelrom.com/rescontent/file/wofogutolepigiposofarilod.pdfIn PDF document text
    • http://daegyung.kr/userfiles/file/20210912073013.pdfIn PDF document text
    • http://ombs.ru/uploads/files/6943988288.pdfIn PDF document text
    • http://www.kymenhome-etsinta.net/tiedostot/files/xozijutegapesulogulab.pdfIn PDF document text
    • http://randoquad72.fr/userfiles/file/73702194862.pdfIn PDF document text
    • http://pereplanirovkaoblast.ru/pict/file/wukutaxadojinatafu.pdfIn PDF document text
    • http://abyss.sk/userfiles/file/dosufimepafukemamo.pdfIn PDF document text
    • https://equipelec.fr/ckfinder/userfiles/files/tuzinalefiravajixexenak.pdfIn PDF document text
    • https://www.parquesanalbertohurtado.cl/ckfinder/userfiles/files/51283277655.pdfIn PDF document text
    • https://paulogomeslda.com/userfiles/file/dejepimixamudiripopefut.pdfIn PDF document text
    • http://bitree.net/ckfinder/userfiles/files/vabijurusajozimupagepep.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_off0000b4d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4D7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cce9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCE9 16980 bytes
SHA-256: f40282d0ade4027efe591f4b4edb45100fdd83c95982351ccc77a6fc6b8e64b3
font_02_sfnt_off0000f7d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D2 10444 bytes
SHA-256: a66bc76a171a6475d98454d8a3ed28eca732642bddd6f86d7d3eb09ddbdffcb3

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