Malicious PDF — malware analysis report

Static analysis result for SHA-256 b79688345662e275…

MALICIOUS

PDF

102.3 KB Created: 2022-05-28 13:37:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: ba6f2cb66620875a49b050a7e6212ac0 SHA-1: 1efc0aac32df099a75af1d442817da663221de12 SHA-256: b79688345662e27594b2a7a7338b5c720bf6fbb3f6da31cfdbdeb0e70d4d67e3
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous external links, with one specifically identified as a potential lure for an advance-fee scam involving lottery winnings or parcel delivery. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary malicious URL identified is https://norin.co.za/YmrXLWy8?keyword=landscape%20architecture%20plan%20pdf%20%20software%202020, which is likely used to redirect the user to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://norin.co.za/YmrXLWy8?keyword=landscape%20architecture%20plan%20pdf%20%20software%202020
    • https://vagomonezupu.weebly.com/uploads/1/3/4/4/134403629/misapasokukojujev.pdf
    • https://mujaxelixoduren.weebly.com/uploads/1/3/3/9/133997177/3722695.pdf
    • https://petenugilamabo.weebly.com/uploads/1/3/1/4/131453278/feee8a6496f7bfd.pdf
    • https://godadonalizubo.weebly.com/uploads/1/3/1/4/131437317/4367691.pdf
    • https://sevujixosatanin.weebly.com/uploads/1/3/5/3/135316334/tozilewagal.pdf
    • https://worabixoregosev.weebly.com/uploads/1/4/1/7/141777778/komosuzikorika.pdf
    • https://xaxarudo.weebly.com/uploads/1/3/0/7/130740130/redigor.pdf
    • https://vurigejowuzebad.weebly.com/uploads/1/3/3/9/133997249/b6a2fdd5.pdf
    • https://tabikanopik.weebly.com/uploads/1/3/4/7/134705808/4553214.pdf
    • https://nozodipipagim.weebly.com/uploads/1/3/1/4/131438171/566165.pdf
    • https://fenuligor.weebly.com/uploads/1/3/2/6/132695430/703c94806533f.pdf
    • https://satobolusiv.weebly.com/uploads/1/3/1/3/131398412/7644855.pdf
    • https://wisefumi.weebly.com/uploads/1/3/4/6/134672277/ba01f56ae7123a.pdf
    • https://pizufugutim.weebly.com/uploads/1/3/4/7/134723530/jabuwinel-zadilunaf-roludaze-paraluzovunuw.pdf
    • https://zezigejuto.weebly.com/uploads/1/3/5/3/135318470/luwajomademimokiz.pdf
    • https://waperimawomexav.weebly.com/uploads/1/3/4/7/134733778/3966120.pdf
    • https://gagaxezoxi.weebly.com/uploads/1/3/4/7/134760548/f2c4cd.pdf
    • https://luvalunixa.weebly.com/uploads/1/4/1/3/141319625/fegalobomuwizur.pdf
    • https://jubagimijan.weebly.com/uploads/1/3/5/3/135333733/fiwelok_ripomevux_sapujutaza.pdf
    • https://xidaxawefitorat.weebly.com/uploads/1/3/5/9/135958331/1419891.pdf
    • https://buliduxefexefux.weebly.com/uploads/1/3/1/6/131636978/348070.pdf
    • https://davilowomigubez.weebly.com/uploads/1/4/1/4/141423674/novugubowusa.pdf
    • https://bukujenot.weebly.com/uploads/1/4/1/3/141389648/zuromigakopig-mikisonevi-lodunataripe-ditipo.pdf
    • https://rigozanukamesok.weebly.com/uploads/1/3/4/5/134508669/keted.pdf
    • 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_off0001297d.bin
c266d39fffe9759511edf3e004667b8d77e82f6c527bd4d7e0217b22b057f104		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1297D 17700 bytes
font_01_sfnt_off00015823.bin
3a9aaddcfc3ba687f04dd7afd669edec9e0257f64acbfc92e1bc13a16eda8b32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15823 11100 bytes
font_02_sfnt_off00017206.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17206 16792 bytes

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