Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4b4f4db704fcbce…

MALICIOUS

PDF

38.7 KB Authoring application: QPDF
MD5: 211e3fb4e0b0b9672a7d45f3893d4580 SHA-1: 496ae5380d2777b294d898c9ed3ac5fb3458a4a1 SHA-256: c4b4f4db704fcbcef29f1bfbc34b1854c487bf9ee6df0206b71ca7ec1f8adf58
152 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, as detected by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV also flagged this file as malicious, with ClamAV identifying it as Pdf.Phishing.TtraffRobotInstall. The embedded URLs suggest a phishing or SEO spam campaign, aiming to redirect users to potentially malicious content hosted on numerous domains. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://castledeepenergy.com/uploads/1/3/0/5/130542934/popavidi.pdf
    • http://thetwigwarehouse.com/uploads/1/3/0/5/130539825/tozuvakoligutiragij.pdf
    • http://larisamanescu.com/uploads/1/3/0/6/130622106/63e15b.pdf
    • http://numberyoga.com/uploads/1/3/0/4/130489143/4315226.pdf
    • http://kwazulufunctioncaterers.co.za/uploads/1/3/0/6/130640097/gawitezuxivirop.pdf
    • http://mylevelbest.org/uploads/1/3/0/2/130272406/ee7ec.pdf
    • http://www.passionatetouchlala.com/uploads/1/3/0/4/130477026/1581138.pdf
    • http://shopluckybamboo.com/uploads/1/3/0/6/130604877/66c37a551.pdf
    • http://lampeelife.com/uploads/1/3/0/6/130620669/a0b8c94c73.pdf
    • http://goldeneyezcollection.com/uploads/1/3/0/8/130874544/2040645.pdf
    • http://carrielcopeland.com/uploads/1/3/0/7/130776083/dejirevus_samobu_rosumabefupamat.pdf
    • http://lilymere.com.au/uploads/1/3/0/7/130776485/defajawur_mitakut.pdf
    • http://www.weiserriverscd.com/uploads/1/3/0/4/130483542/bokunodemixife_xovugisavek_fefasatavakix_narewitafeb.pdf
    • http://globalimpactfunding.com/uploads/1/3/0/3/130379194/kibodi_pajebuzesuj_kanubibil_ralumix.pdf
    • http://solutionslocker.com/uploads/1/3/0/4/130435654/lawavesaretokux-wigebow-pemiga.pdf
    • http://voyagesmondesa.com/uploads/1/3/0/5/130588700/jokutero.pdf
    • http://abyss37.pleasingfood.com/uploads/1/3/0/7/130775478/130775478.html#5%2A5%2A5+led+cube+arduino+uno+code
    • http://carrielcopeland.com/uploads/1/3/0/7/130776083/dejir

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030ad.bin
d8435aac11388b8214bfc980e857510ef47481ba706565f25bd6cae8efb01319		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30AD 2828 bytes
font_01_sfnt_off00003cd7.bin
bec4b05e4fe09edc01bc4f35d175623a3e7440bebaa4e93391d8566ed4fb6ce5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3CD7 7244 bytes

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