Malicious PDF — malware analysis report

Static analysis result for SHA-256 165628fd0ee382bc…

MALICIOUS

PDF

46.7 KB Authoring application: Smallpdf Desktop
MD5: ef04623087200d4b5e613496172668d1 SHA-1: 4b63c49e63d95525b1a5632646435f239dd74ea6 SHA-256: 165628fd0ee382bc9e4df2522902ac2cc27292bff517452237fe2ce1b6a72f81
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO spam or phishing campaigns. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content.

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 https://jafikotagix.weebly.com/uploads/1/3/0/4/130476908/deffaf7712547.pdf
    • http://smslog.in/uploads/2020/01/27/5048595.pdf
    • http://catamaranadastra.com/uploads/1/3/0/3/130323547/disaseparokuvok.pdf
    • http://xebutorota.conexionpty.com/uploads/2020/01/28/3ea5a12c6e4.pdf
    • http://project-solutions.org/uploads/1/3/0/5/130551206/rafokozubimom.pdf
    • http://sem.coffee-cap24.info/uploads/2020/01/28/9f45537804a7905.pdf
    • http://numadifix.niletube.com/uploads/2020/01/29/67a84827.pdf
    • https://woxexajom.weebly.com/uploads/1/3/0/6/130604863/pewisumaloga.pdf
    • http://myrole.io/uploads/1/3/0/4/130479123/gamekoxino.pdf
    • http://jonow.8765432.org/uploads/2020/01/28/f4d2e2bb259532.pdf
    • http://vina.avteurope.com/uploads/2020/01/29/a32600fa7.pdf
    • http://grandkuhni.ru/uploads/2020/01/28/97e468.pdf
    • http://powerathleticsonline.com/uploads/1/3/0/3/130313463/6276106.pdf
    • http://clavesparatusalud.com/uploads/1/3/0/5/130541208/6b46dfc.pdf
    • http://biw.feirverk-spb.ru/uploads/2020/01/28/roletonekiwebu.pdf
    • http://repentir.me/uploads/1/3/0/4/130478261/d27b2a416271a84.pdf
    • http://lwmchurch.com/uploads/1/3/0/4/130477566/8835957.pdf
    • http://vijen.sabuyjaishopping.com/uploads/2020/01/28/d0c0e709cd.pdf
    • https://rawusepir.weebly.com/uploads/1/3/0/2/130288391/69713c29c7347.pdf
    • http://zygoptera.us/uploads/1/3/0/4/130476024/wopaliwunuzevakak.pdf
    • https://vozujurofa.weebly.com/uploads/1/3/0/6/130604502/9630287.pdf
    • https://warajozawuv.weebly.com/uploads/1/3/0/4/130478314/c8fb5a579a5d.pdf
    • http://tagu.flowers-mood.ru/uploads/2020/01/27/firejipomebugeb.pdf
    • http://mat.djpschool.com/uploads/2020/01/29/3f3e1.pdf
    • http://baz.storeshop.xyz/uploads/2020/01/28/4337806.pdf
    • http://brighterawards.com/uploads/1/3/0/3/130313390/130313390.html#shutter+board+sheets
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001712.bin
305ab2a8987e04d6ed38829c74838b9bf87c2117e6fc7af365479aa94e15a384		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1712 8536 bytes
font_01_sfnt_off00006f4a.bin
6db2f878e0fd57d3a351d0d81a5ccd7b58f68df6728dadc3aee3ebeb1a1d6e60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4A 16068 bytes

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