Malicious PDF — malware analysis report

Static analysis result for SHA-256 3aaa2e8f06217933…

MALICIOUS

PDF

75.3 KB Created: 2021-09-20 17:46:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 697db2a5a7ffb970e3e987cd7a7347e7 SHA-1: 513dce045db980e9748eed8133bed1835444b440 SHA-256: 3aaa2e8f06217933bf89804dec1a0611ed23b6a397bae1e974915b0a63a97312
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, suggesting an attempt to redirect users to malicious sites. The presence of a URL related to 'among us hack mod menu android apk' indicates a lure to attract users interested in cheats or hacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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 http://noticiascgnews.com.br/ckfinder/userfiles/files/54579197851.pdf
    • http://elsped.hu/files/file/8908507908.pdf
    • https://tectrongim.com/uploads/file/39659708764.pdf
    • http://4998horo.gmmwireless.com/contents/files/xezixokoxulabaselawo.pdf
    • https://monyetjoget.com/contents/files/kawadadufibe.pdf
    • http://specimport.by/files/files/83014765349.pdf
    • http://www.siposferenc.hu/html/ruvupawoluvusakowubob.pdf
    • http://fence-alarm.com/userfiles/files/71580161315.pdf
    • http://avsa.org/sites/default/files/images/files/voredijarokivupukudokute.pdf
    • https://artistprasanna.com/userfiles/file/40694628896.pdf
    • http://biafrapol.pl/pliki/file/96892998922.pdf
    • http://alacartedesign.de/userfiles/file/90941555209.pdf
    • https://iqmuseum.mn/uploads/files/vusiranus.pdf
    • http://fractinvest.com/uploads/file/23246725826.pdf
    • http://icoenergia.com/userfiles/files/fariribuv.pdf
    • https://xn--90aweabvm.xn--p1ai/ckfinder/userfiles/files/29872890489.pdf
    • http://sjzhtchem.com/upload/files/lavunonarikubano.pdf
    • http://emons-verlag.net/testarea/cwsCMSlight/media/files/95209556243.pdf
    • http://biomax.shop/filespath/files/20210908150019.pdf
    • https://tmtteks.com/files/25295346200.pdf
    • http://top1np.com/ckfinder/userfiles/files/16073653107.pdf
    • http://sghscsjamarai.org/guruhargobind/userfiles/file/bewuka.pdf
    • http://mehmetrasimmutlu.com/icerik/file/xebenipikazitita.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=among+us+hack+mod+menu+android+apk
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf4c.bin
dbbd453f6c62891e92961c62cf2645c2311373ef42e2bf97a0d980b06c54ef45		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF4C 10992 bytes
font_01_sfnt_off0000d871.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD871 16792 bytes
font_02_sfnt_off0000f083.bin
c4e9e5fcf49c2ed97024ee4126617e22841c1ab964676f125a4d86225009bc6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF083 17904 bytes

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