Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5d953179d7f3148…

MALICIOUS

PDF

36.5 KB Created: 2020-05-15 21:33:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: bc293d7c095d0ef8ec98cc92723fd4c8 SHA-1: 22e383d2e4beef24a9954ea731f85b4f3bfd618d SHA-256: f5d953179d7f3148d8a4bf47a365e5c54aceba4d60b445488de782185142dc37
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF document contains a lure for a remote support tool, specifically mentioning a 'Teamviewer cracked version'. It also hosts a large number of external links, many pointing to PDF files, suggesting a link farm or distribution mechanism. The primary URL http://libertempo.net/uploads/1/3/1/3/131384016/131384016.html#teamviewer++cracked+version is directly related to the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://libertempo.net/uploads/1/3/1/3/131384016/131384016.html#teamviewer++cracked+version PDF link annotation
    • http://vaoffroadriders.com/uploads/1/3/1/3/131383977/6031027.pdfIn PDF document text
    • http://harlesscenter.org/uploads/1/3/1/1/131163772/5b28f9d8cc14.pdfIn PDF document text
    • http://texasbestautodeals.com/uploads/1/3/0/2/130287992/givugazitada.pdfIn PDF document text
    • http://caddiesoncourse.com/uploads/1/3/0/6/130604956/8491225.pdfIn PDF document text
    • http://lubbockpestcontrol.net/uploads/1/3/1/3/131379803/wovaj_tobab_kanumizik_wofesenubata.pdfIn PDF document text
    • http://hashtag-electricalservices.com/uploads/1/3/0/4/130483295/lunajawi-sutimajuga-pidorugipon-fiwoxutupij.pdfIn PDF document text
    • http://globalgirlmiami.com/uploads/1/3/0/5/130538816/4656176.pdfIn PDF document text
    • http://flyingfalconnews.com/uploads/1/3/0/6/130620689/vesamujef.pdfIn PDF document text
    • http://giveablegiggles.com/uploads/1/3/0/4/130488934/e1e2d4f3.pdfIn PDF document text
    • http://elias4picoriveracitycouncil.com/uploads/1/3/1/4/131410736/0fa3d09f920fc.pdfIn PDF document text
    • http://torontoteamtrainer.com/uploads/1/3/0/5/130544136/3998503.pdfIn PDF document text
    • http://dennisgrooming.com/uploads/1/3/0/5/130588517/wifiwedo.pdfIn PDF document text
    • http://architectsareassholes.com/uploads/1/3/0/3/130379596/gesaleri-konug-pelagotitov-noderezu.pdfIn PDF document text
    • http://israeltravel4you.com/uploads/1/3/0/5/130543369/sosafajuwiximir-fodosuwigebuvus-muvepomiletumer-nunenemebanovaj.pdfIn PDF document text
    • http://zensationalmassageatx.com/uploads/1/3/0/4/130435710/57f2b.pdfIn PDF document text
    • http://victoriateachingartist.com/uploads/1/3/0/6/130639824/kupazezowef.pdfIn PDF document text
    • http://cherylanntaylor.com/uploads/1/3/0/7/130739476/c7f664.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF4 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_01_sfnt_off0000657f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x657F 9568 bytes
SHA-256: 79954ff88f4c78dd47f8096a4338070814adf433866df97001b969f12d483d19

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