Malicious PDF — malware analysis report

Static analysis result for SHA-256 883b49c033465e32…

MALICIOUS

PDF

73.8 KB Authoring application: QPDF
MD5: 2e68e6125ca4ba51a12c337b5f3b3a77 SHA-1: eddba90696abe4d1538152ba55d408e9fdd4170d SHA-256: 883b49c033465e32afc52762f1fd9b2a875dd01be93dedb6f4d72337c35a656c
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for a link farm and ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The document body contains numerous embedded URLs, suggesting a phishing or SEO-based malicious distribution strategy. The primary attack pattern involves presenting a large number of external links, likely to redirect users to malicious content or to manipulate search engine results.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://fagejalunef.weebly.com/uploads/1/3/0/5/130551697/1162155.pdf
    • http://gurepe.avtovikuppro.ru/uploads/2020/01/28/jukekoba-jadob.pdf
    • http://nosugu.kropanev.online/uploads/2020/01/28/sagakaditu-bizes-kiloda-luzibizel.pdf
    • http://fedeke.st-kino.ru/uploads/2020/01/27/0e18c.pdf
    • https://gejodagisux.weebly.com/uploads/1/3/0/4/130476917/4984751.pdf
    • http://jup.m-el.ru/uploads/2020/01/28/nerebagid.pdf
    • http://lemowikabo.gbpfinancials.com/uploads/2020/01/27/xuzavosejojepunazi.pdf
    • http://sakninhna.com/uploads/2020/01/28/5919161.pdf
    • http://chicas-saliendo.fun/uploads/2020/01/28/c2372719.pdf
    • http://rucrime.top/uploads/2020/01/28/zilun.pdf
    • http://killhost.ru/uploads/2020/01/27/2602402.pdf
    • https://medukufemu.weebly.com/uploads/1/3/0/5/130550880/8063612.pdf
    • http://asolar.shop/uploads/2020/01/29/8440073.pdf
    • http://gaka.thisthoughts.com/uploads/2020/01/28/317208e025e246.pdf
    • http://aeroagt.com/uploads/1/3/0/2/130287960/130287960.html#hdt+physics+sse

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013b8.bin
1760d0b48c7c06368e807bfd52cdb1dc349d4bbfaa8851eb41b404121f3515f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13B8 8500 bytes
font_01_sfnt_off0000c1b6.bin
6db2f878e0fd57d3a351d0d81a5ccd7b58f68df6728dadc3aee3ebeb1a1d6e60		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC1B6 16068 bytes
font_02_sfnt_off0000d604.bin
3d52fc27d04b8b84b219df719738f768697e09c2050136bc1fe69fcddf4eca6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD604 2652 bytes
font_03_sfnt_off0000ded5.bin
170d6932bf44b321e9160df485864fcce144e753550d813ff95f08ec196af36d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDED5 5340 bytes

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