Malicious PDF — malware analysis report

Static analysis result for SHA-256 dac7e11a558c06b7…

MALICIOUS

PDF

308.1 KB Created: 2022-06-08 06:19:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: ca3b9783d95d9e4ffd826e1634b78d00 SHA-1: 38a59049632e52c6c104c23e436430ecc098f2c5 SHA-256: dac7e11a558c06b72d089b6b360fdc1ff86bc0c1e1bd5fb5d1fa19e066b7bafd
96 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious content. An embedded URL points to a suspicious domain, likely for phishing purposes. The document body is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf, a common tool for creating PDFs from web content, which could be used to disguise malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7334

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://colod.co.za/XSRYdR1H?utm_term=padre+rico+padre+pobre+pdf+english+version+free+pdf+file
    • https://xamirudanigux.weebly.com/uploads/1/3/0/9/130969419/3f71ea00d.pdf
    • https://xororawezajeber.weebly.com/uploads/1/3/5/3/135338150/420fe99.pdf
    • https://pululojus.weebly.com/uploads/1/4/1/5/141594416/loteji_tugevusedud_dazebosix.pdf
    • https://nupafosudivoz.weebly.com/uploads/1/3/2/6/132682156/zufofirububogaru.pdf
    • https://wuzarisuzi.weebly.com/uploads/1/3/4/6/134616486/83bc54963f7fde0.pdf
    • https://gokewulifas.weebly.com/uploads/1/3/4/5/134599519/falavarezuragu_lunuvulusu.pdf
    • https://vijivavepedu.weebly.com/uploads/1/3/4/3/134313627/nekusetaj.pdf
    • https://gumotamilo.weebly.com/uploads/1/3/5/3/135319527/miromufajurur_fewazigi_wegafemegana_givedu.pdf
    • https://bajurajatug.weebly.com/uploads/1/3/6/0/136054821/sotubikugenisewamara.pdf
    • https://kotogafisix.weebly.com/uploads/1/3/0/7/130740127/3f7b68ae2e514.pdf
    • https://nilezejexi.weebly.com/uploads/1/3/4/7/134737846/6c269621.pdf
    • https://gelupolo.weebly.com/uploads/1/3/5/3/135314506/lopevupufaki-tebev.pdf
    • https://sidusumidiwef.weebly.com/uploads/1/3/4/3/134366372/fa3f8d34652.pdf
    • https://xogedanubukojoj.weebly.com/uploads/1/3/4/4/134491538/xufinedad.pdf
    • https://xudaxeja.weebly.com/uploads/1/3/4/3/134339900/xipodotirize.pdf
    • https://bokefelefu.weebly.com/uploads/1/3/1/3/131383825/watabezutovas.pdf
    • https://rovetizewi.weebly.com/uploads/1/3/0/7/130776299/801991.pdf
    • https://xixurisegiwawaz.weebly.com/uploads/1/3/4/0/134012782/866487.pdf
    • https://raxazejopife.weebly.com/uploads/1/3/5/3/135313527/sonof-zalamegif-marelapoxazafi.pdf
    • https://rusenudiwupelor.weebly.com/uploads/1/3/4/7/134704890/2572106.pdf
    • https://kobosarajuxinit.weebly.com/uploads/1/3/0/9/130969632/1d418.pdf
    • https://sofupikibir.weebly.com/uploads/1/3/5/3/135302021/nowexodad.pdf
    • https://nufewaxitobazat.weebly.com/uploads/1/3/4/7/134748461/c7c9d12e5ca15.pdf
    • https://gunimumatepatu.weebly.com/uploads/1/3/5/3/135313318/04c885da.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_off00045baf.bin
95f502db4cf9227ccd38d6aa3f3f75a705003208a412cf1546b2a08699c51bdd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45BAF 19140 bytes
font_01_sfnt_off00048de5.bin
6856a961089b9ff55d818a8baa9d14cde343de322056c5600ea0743ce632050d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48DE5 11008 bytes
font_02_sfnt_off0004a6e9.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A6E9 16792 bytes

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